56881775 has 6 divisors (see below), whose sum is σ = 70533432. Its totient is φ = 45505400.

The previous prime is 56881771. The next prime is 56881777. The reversal of 56881775 is 57718865.

It is a happy number.

It is not a de Polignac number, because 56881775 - 2² = 56881771 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56881771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1137611 + ... + 1137660.

It is an arithmetic number, because the mean of its divisors is an integer number (11755572).

Almost surely, 2^56881775 is an apocalyptic number.

56881775 is a deficient number, since it is larger than the sum of its proper divisors (13651657).

56881775 is a wasteful number, since it uses less digits than its factorization.

56881775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2275281 (or 2275276 counting only the distinct ones).

The product of its digits is 470400, while the sum is 47.

The square root of 56881775 is about 7542.0007292495. Note that the first 3 decimals coincide. The cubic root of 56881775 is about 384.5838534920.

The spelling of 56881775 in words is "fifty-six million, eight hundred eighty-one thousand, seven hundred seventy-five".