57133531 has 8 divisors (see below), whose sum is σ = 70318304. Its totient is φ = 45204480.

The previous prime is 57133519. The next prime is 57133537. The reversal of 57133531 is 13533175.

57133531 is nontrivially palindromic in base 14.

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

It is a cyclic number.

It is not a de Polignac number, because 57133531 - 2¹¹ = 57131483 is a prime.

It is a super-2 number, since 2×57133531² = 6528480729055922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 57133531.

It is not an unprimeable number, because it can be changed into a prime (57133537) 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, 313830 + ... + 314011.

It is an arithmetic number, because the mean of its divisors is an integer number (8789788).

Almost surely, 2^57133531 is an apocalyptic number.

57133531 is a deficient number, since it is larger than the sum of its proper divisors (13184773).

57133531 is a wasteful number, since it uses less digits than its factorization.

57133531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627861.

The product of its digits is 4725, while the sum is 28.

The square root of 57133531 is about 7558.6725686459. The cubic root of 57133531 is about 385.1504016860.

The spelling of 57133531 in words is "fifty-seven million, one hundred thirty-three thousand, five hundred thirty-one".