57645231 has 8 divisors (see below), whose sum is σ = 87840384. Its totient is φ = 32940120.

The previous prime is 57645209. The next prime is 57645233. The reversal of 57645231 is 13254675.

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

It is not a de Polignac number, because 57645231 - 2⁷ = 57645103 is a prime.

It is a super-2 number, since 2×57645231² = 6645945314086722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 57645192 and 57645201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57645233) 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 7 ways as a sum of consecutive naturals, for example, 1372485 + ... + 1372526.

It is an arithmetic number, because the mean of its divisors is an integer number (10980048).

Almost surely, 2^57645231 is an apocalyptic number.

57645231 is a deficient number, since it is larger than the sum of its proper divisors (30195153).

57645231 is a wasteful number, since it uses less digits than its factorization.

57645231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2745021.

The product of its digits is 25200, while the sum is 33.

The square root of 57645231 is about 7592.4456534110. The cubic root of 57645231 is about 386.2968154732.

The spelling of 57645231 in words is "fifty-seven million, six hundred forty-five thousand, two hundred thirty-one".