57229818 has 32 divisors (see below), whose sum is σ = 121176000. Its totient is φ = 17988096.

The previous prime is 57229817. The next prime is 57229829. The reversal of 57229818 is 81892275.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 57229818.

It is not an unprimeable number, because it can be changed into a prime (57229817) 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, 3658 + ... + 11306.

It is an arithmetic number, because the mean of its divisors is an integer number (3786750).

Almost surely, 2^57229818 is an apocalyptic number.

57229818 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

57229818 is an abundant number, since it is smaller than the sum of its proper divisors (63946182).

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

57229818 is a wasteful number, since it uses less digits than its factorization.

57229818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7726.

The product of its digits is 80640, while the sum is 42.

The square root of 57229818 is about 7565.0391935535. The cubic root of 57229818 is about 385.3666445968.

The spelling of 57229818 in words is "fifty-seven million, two hundred twenty-nine thousand, eight hundred eighteen".