57243918 has 32 divisors (see below), whose sum is σ = 123328512. Its totient is φ = 17661600.

The previous prime is 57243911. The next prime is 57243959. The reversal of 57243918 is 81934275.

It is a super-2 number, since 2×57243918² = 6553732295981448, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57243911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2413 + ... + 10968.

It is an arithmetic number, because the mean of its divisors is an integer number (3854016).

Almost surely, 2^57243918 is an apocalyptic number.

57243918 is an abundant number, since it is smaller than the sum of its proper divisors (66084594).

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

57243918 is a wasteful number, since it uses less digits than its factorization.

57243918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13440.

The product of its digits is 60480, while the sum is 39.

The square root of 57243918 is about 7565.9710546631. The cubic root of 57243918 is about 385.3982902418.

The spelling of 57243918 in words is "fifty-seven million, two hundred forty-three thousand, nine hundred eighteen".