56775477 has 64 divisors (see below), whose sum is σ = 94371840. Its totient is φ = 29937600.

The previous prime is 56775473. The next prime is 56775493. The reversal of 56775477 is 77457765.

56775477 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56775477 - 2² = 56775473 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56775473) 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 63 ways as a sum of consecutive naturals, for example, 446988 + ... + 447114.

It is an arithmetic number, because the mean of its divisors is an integer number (1474560).

Almost surely, 2^56775477 is an apocalyptic number.

56775477 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

It is an amenable number.

56775477 is a deficient number, since it is larger than the sum of its proper divisors (37596363).

56775477 is a wasteful number, since it uses less digits than its factorization.

56775477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214.

The product of its digits is 1440600, while the sum is 48.

The square root of 56775477 is about 7534.9503648000. The cubic root of 56775477 is about 384.3441400038.

The spelling of 56775477 in words is "fifty-six million, seven hundred seventy-five thousand, four hundred seventy-seven".