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253502013 = 3457184903
BaseRepresentation
bin11110001110000…
…10001000111101
3122200000020101110
433013002020331
51004344031023
641053232233
76165505632
oct1707021075
9580006343
10253502013
111201058a6
1270a92679
134069a6bb
142594c189
15173c6a93
hexf1c223d

253502013 has 8 divisors (see below), whose sum is σ = 338744128. Its totient is φ = 168630624.

The previous prime is 253501991. The next prime is 253502069. The reversal of 253502013 is 310205352.

253502013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 253502013 - 26 = 253501949 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253502213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91081 + ... + 93822.

It is an arithmetic number, because the mean of its divisors is an integer number (42343016).

Almost surely, 2253502013 is an apocalyptic number.

It is an amenable number.

253502013 is a deficient number, since it is larger than the sum of its proper divisors (85242115).

253502013 is a wasteful number, since it uses less digits than its factorization.

253502013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185363.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 253502013 is about 15921.7465436428. The cubic root of 253502013 is about 632.8884025194. Note that the first 3 decimals are identical.

Adding to 253502013 its reverse (310205352), we get a palindrome (563707365).

The spelling of 253502013 in words is "two hundred fifty-three million, five hundred two thousand, thirteen".

Divisors: 1 3 457 1371 184903 554709 84500671 253502013