57322780 has 12 divisors (see below), whose sum is σ = 120377880. Its totient is φ = 22929104.

The previous prime is 57322747. The next prime is 57322801. The reversal of 57322780 is 8722375.

It is a super-2 number, since 2×57322780² = 6571802213856800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1433050 + ... + 1433089.

It is an arithmetic number, because the mean of its divisors is an integer number (10031490).

Almost surely, 2^57322780 is an apocalyptic number.

It is an amenable number.

57322780 is an abundant number, since it is smaller than the sum of its proper divisors (63055100).

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

57322780 is a wasteful number, since it uses less digits than its factorization.

57322780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2866148 (or 2866146 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 57322780 is about 7571.1808854366. The cubic root of 57322780 is about 385.5751901618.

The spelling of 57322780 in words is "fifty-seven million, three hundred twenty-two thousand, seven hundred eighty".