57531292 has 72 divisors (see below), whose sum is σ = 128388624. Its totient is φ = 22353408.

The previous prime is 57531277. The next prime is 57531307. The reversal of 57531292 is 29213575.

It is an interprime number because it is at equal distance from previous prime (57531277) and next prime (57531307).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 170548 + ... + 170884.

Almost surely, 2^57531292 is an apocalyptic number.

57531292 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57531292, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64194312).

57531292 is an abundant number, since it is smaller than the sum of its proper divisors (70857332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57531292 is a wasteful number, since it uses less digits than its factorization.

57531292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435 (or 426 counting only the distinct ones).

The product of its digits is 18900, while the sum is 34.

The square root of 57531292 is about 7584.9384967843. The cubic root of 57531292 is about 386.0421352341.

The spelling of 57531292 in words is "fifty-seven million, five hundred thirty-one thousand, two hundred ninety-two".