56721152 has 18 divisors (see below), whose sum is σ = 113221248. Its totient is φ = 28360448.

The previous prime is 56721149. The next prime is 56721157. The reversal of 56721152 is 25112765.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56721157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110528 + ... + 111039.

Almost surely, 2^56721152 is an apocalyptic number.

It is an amenable number.

56721152 is a deficient number, since it is larger than the sum of its proper divisors (56500096).

56721152 is an equidigital number, since it uses as much as digits as its factorization.

56721152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221583 (or 221569 counting only the distinct ones).

The product of its digits is 4200, while the sum is 29.

The square root of 56721152 is about 7531.3446342602. The cubic root of 56721152 is about 384.2215157095.

The spelling of 56721152 in words is "fifty-six million, seven hundred twenty-one thousand, one hundred fifty-two".