57046220 has 96 divisors (see below), whose sum is σ = 158215680. Its totient is φ = 16727040.

The previous prime is 57046217. The next prime is 57046229. The reversal of 57046220 is 2264075.

It is a self number, because there is not a number n which added to its sum of digits gives 57046220.

It is not an unprimeable number, because it can be changed into a prime (57046229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25091 + ... + 27269.

It is an arithmetic number, because the mean of its divisors is an integer number (1648080).

Almost surely, 2^57046220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57046220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79107840).

57046220 is an abundant number, since it is smaller than the sum of its proper divisors (101169460).

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

57046220 is a wasteful number, since it uses less digits than its factorization.

57046220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2223 (or 2221 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 57046220 is about 7552.8948092768. The cubic root of 57046220 is about 384.9541070838.

The spelling of 57046220 in words is "fifty-seven million, forty-six thousand, two hundred twenty".