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253877085 = 34572111163
BaseRepresentation
bin11110010000111…
…01101101011101
3122200201021220000
433020131231131
51004443031320
641105244513
76201630300
oct1710355535
9580637800
10253877085
11120341680
1271033739
134079c337
1425a08b37
151744cc90
hexf21db5d

253877085 has 120 divisors (see below), whose sum is σ = 578023776. Its totient is φ = 105416640.

The previous prime is 253877053. The next prime is 253877087. The reversal of 253877085 is 580778352.

It is not a de Polignac number, because 253877085 - 25 = 253877053 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 253877085.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253877087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 217714 + ... + 218876.

Almost surely, 2253877085 is an apocalyptic number.

It is an amenable number.

253877085 is an abundant number, since it is smaller than the sum of its proper divisors (324146691).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

253877085 is a wasteful number, since it uses less digits than its factorization.

253877085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1205 (or 1189 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 45.

The square root of 253877085 is about 15933.5207973630. The cubic root of 253877085 is about 633.2003812949.

The spelling of 253877085 in words is "two hundred fifty-three million, eight hundred seventy-seven thousand, eighty-five".

Divisors: 1 3 5 7 9 11 15 21 27 33 35 45 49 55 63 77 81 99 105 135 147 165 189 231 245 297 315 385 405 441 495 539 567 693 735 891 945 1155 1163 1323 1485 1617 2079 2205 2695 2835 3465 3489 3969 4455 4851 5815 6237 6615 8085 8141 10395 10467 12793 14553 17445 19845 24255 24423 31185 31401 38379 40705 43659 52335 56987 63965 72765 73269 89551 94203 115137 122115 157005 170961 191895 218295 219807 268653 284935 345411 366345 447755 471015 512883 575685 626857 659421 805959 854805 1036233 1099035 1343265 1538649 1727055 1880571 2417877 2564415 3134285 3297105 4029795 4615947 5181165 5641713 7253631 7693245 9402855 12089385 16925139 23079735 28208565 36268155 50775417 84625695 253877085