56977521 has 8 divisors (see below), whose sum is σ = 78023424. Its totient is φ = 36958320.

The previous prime is 56977519. The next prime is 56977541. The reversal of 56977521 is 12577965.

56977521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56977521 - 2¹ = 56977519 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56977511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256545 + ... + 256766.

It is an arithmetic number, because the mean of its divisors is an integer number (9752928).

Almost surely, 2^56977521 is an apocalyptic number.

It is an amenable number.

56977521 is a deficient number, since it is larger than the sum of its proper divisors (21045903).

56977521 is a wasteful number, since it uses less digits than its factorization.

56977521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513351.

The product of its digits is 132300, while the sum is 42.

The square root of 56977521 is about 7548.3455803242. The cubic root of 56977521 is about 384.7995155653.

The spelling of 56977521 in words is "fifty-six million, nine hundred seventy-seven thousand, five hundred twenty-one".