57220732 has 6 divisors (see below), whose sum is σ = 100136288. Its totient is φ = 28610364.

The previous prime is 57220697. The next prime is 57220753. The reversal of 57220732 is 23702275.

It is a self number, because there is not a number n which added to its sum of digits gives 57220732.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7152588 + ... + 7152595.

Almost surely, 2^57220732 is an apocalyptic number.

It is an amenable number.

57220732 is a deficient number, since it is larger than the sum of its proper divisors (42915556).

57220732 is a wasteful number, since it uses less digits than its factorization.

57220732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14305187 (or 14305185 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 28.

The square root of 57220732 is about 7564.4386440766. The cubic root of 57220732 is about 385.3462494789.

The spelling of 57220732 in words is "fifty-seven million, two hundred twenty thousand, seven hundred thirty-two".