57021234 has 16 divisors (see below), whose sum is σ = 114272640. Its totient is φ = 18968720.

The previous prime is 57021233. The next prime is 57021241. The reversal of 57021234 is 43212075.

It is a super-2 number, since 2×57021234² = 6502842253765512, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (57021233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6282 + ... + 12389.

It is an arithmetic number, because the mean of its divisors is an integer number (7142040).

Almost surely, 2^57021234 is an apocalyptic number.

57021234 is an abundant number, since it is smaller than the sum of its proper divisors (57251406).

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

57021234 is a wasteful number, since it uses less digits than its factorization.

57021234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19185.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 57021234 is about 7551.2405603318. The cubic root of 57021234 is about 384.8978961263.

The spelling of 57021234 in words is "fifty-seven million, twenty-one thousand, two hundred thirty-four".