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57431491325 = 5213176712281
BaseRepresentation
bin110101011111001011…
…110000001011111101
312111020111111001020022
4311133023300023331
51420104430210300
642214512101525
74102130423135
oct653713601375
9174214431208
1057431491325
11223a164151a
12b1698348a5
135553591c80
142acb6cbac5
151761ee3285
hexd5f2f02fd

57431491325 has 12 divisors (see below), whose sum is σ = 76693130388. Its totient is φ = 42410947200.

The previous prime is 57431491307. The next prime is 57431491367. The reversal of 57431491325 is 52319413475.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 3252877156 + 54178614169 = 57034^2 + 232763^2 .

It is not a de Polignac number, because 57431491325 - 28 = 57431491069 is a prime.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88355816 + ... + 88356465.

It is an arithmetic number, because the mean of its divisors is an integer number (6391094199).

Almost surely, 257431491325 is an apocalyptic number.

It is an amenable number.

57431491325 is a deficient number, since it is larger than the sum of its proper divisors (19261639063).

57431491325 is a wasteful number, since it uses less digits than its factorization.

57431491325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176712304 (or 176712299 counting only the distinct ones).

The product of its digits is 453600, while the sum is 44.

The spelling of 57431491325 in words is "fifty-seven billion, four hundred thirty-one million, four hundred ninety-one thousand, three hundred twenty-five".

Divisors: 1 5 13 25 65 325 176712281 883561405 2297259653 4417807025 11486298265 57431491325