57218046 has 16 divisors (see below), whose sum is σ = 114812544. Its totient is φ = 19009944.

The previous prime is 57217999. The next prime is 57218047. The reversal of 57218046 is 64081275.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 57217998 and 57218016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57218047) 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, 13690 + ... + 17373.

It is an arithmetic number, because the mean of its divisors is an integer number (7175784).

Almost surely, 2^57218046 is an apocalyptic number.

57218046 is an abundant number, since it is smaller than the sum of its proper divisors (57594498).

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

57218046 is a wasteful number, since it uses less digits than its factorization.

57218046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31375.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 57218046 is about 7564.2611007289. The cubic root of 57218046 is about 385.3402198682.

The spelling of 57218046 in words is "fifty-seven million, two hundred eighteen thousand, forty-six".