56554640375 has 16 divisors (see below), whose sum is σ = 70725195840. Its totient is φ = 45150760800.

The previous prime is 56554640371. The next prime is 56554640413. The reversal of 56554640375 is 57304645565.

It is a happy number.

It is not a de Polignac number, because 56554640375 - 2² = 56554640371 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56554640371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 403640 + ... + 525389.

It is an arithmetic number, because the mean of its divisors is an integer number (4420324740).

Almost surely, 2^56554640375 is an apocalyptic number.

56554640375 is a deficient number, since it is larger than the sum of its proper divisors (14170555465).

56554640375 is an equidigital number, since it uses as much as digits as its factorization.

56554640375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929531 (or 929521 counting only the distinct ones).

The product of its (nonzero) digits is 7560000, while the sum is 50.

The spelling of 56554640375 in words is "fifty-six billion, five hundred fifty-four million, six hundred forty thousand, three hundred seventy-five".