56976521 has 8 divisors (see below), whose sum is σ = 65693184. Its totient is φ = 48404160.

The previous prime is 56976473. The next prime is 56976523. The reversal of 56976521 is 12567965.

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

It is a de Polignac number, because none of the positive numbers 2^k-56976521 is a prime.

It is a super-3 number, since 3×56976521³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56976523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35225 + ... + 36806.

It is an arithmetic number, because the mean of its divisors is an integer number (8211648).

Almost surely, 2^56976521 is an apocalyptic number.

It is an amenable number.

56976521 is a deficient number, since it is larger than the sum of its proper divisors (8716663).

56976521 is a wasteful number, since it uses less digits than its factorization.

56976521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72151.

The product of its digits is 113400, while the sum is 41.

The square root of 56976521 is about 7548.2793403530. The cubic root of 56976521 is about 384.7972643747.

The spelling of 56976521 in words is "fifty-six million, nine hundred seventy-six thousand, five hundred twenty-one".