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253086271 = 2111199461
BaseRepresentation
bin11110001010111…
…00101000111111
3122122020010002121
433011130220333
51004242230041
641040303411
76162124564
oct1705345077
9578203077
10253086271
1111a951509
1270911b67
13405833b9
142588086b
15173437d1
hexf15ca3f

253086271 has 4 divisors (see below), whose sum is σ = 254285944. Its totient is φ = 251886600.

The previous prime is 253086233. The next prime is 253086307. The reversal of 253086271 is 172680352.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 253086271 - 219 = 252561983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253086221) 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 3 ways as a sum of consecutive naturals, for example, 599520 + ... + 599941.

It is an arithmetic number, because the mean of its divisors is an integer number (63571486).

Almost surely, 2253086271 is an apocalyptic number.

253086271 is a deficient number, since it is larger than the sum of its proper divisors (1199673).

253086271 is a wasteful number, since it uses less digits than its factorization.

253086271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1199672.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 253086271 is about 15908.6853950916. The cubic root of 253086271 is about 632.5422353024.

The spelling of 253086271 in words is "two hundred fifty-three million, eighty-six thousand, two hundred seventy-one".

Divisors: 1 211 1199461 253086271