56877621 has 32 divisors (see below), whose sum is σ = 82992000. Its totient is φ = 34525440.

The previous prime is 56877553. The next prime is 56877637. The reversal of 56877621 is 12677865.

It is not a de Polignac number, because 56877621 - 2¹³ = 56869429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56877641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 314151 + ... + 314331.

It is an arithmetic number, because the mean of its divisors is an integer number (2593500).

Almost surely, 2^56877621 is an apocalyptic number.

It is an amenable number.

56877621 is a deficient number, since it is larger than the sum of its proper divisors (26114379).

56877621 is a wasteful number, since it uses less digits than its factorization.

56877621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389.

The product of its digits is 141120, while the sum is 42.

The square root of 56877621 is about 7541.7253331052. The cubic root of 56877621 is about 384.5744913825.

The spelling of 56877621 in words is "fifty-six million, eight hundred seventy-seven thousand, six hundred twenty-one".