55716631 has 4 divisors (see below), whose sum is σ = 56071672. Its totient is φ = 55361592.

The previous prime is 55716623. The next prime is 55716637. The reversal of 55716631 is 13661755.

55716631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55716631 - 2³ = 55716623 is a prime.

It is a super-2 number, since 2×55716631² = 6208685939980322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55716637) 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 3 ways as a sum of consecutive naturals, for example, 177285 + ... + 177598.

It is an arithmetic number, because the mean of its divisors is an integer number (14017918).

Almost surely, 2^55716631 is an apocalyptic number.

55716631 is a deficient number, since it is larger than the sum of its proper divisors (355041).

55716631 is a wasteful number, since it uses less digits than its factorization.

55716631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355040.

The product of its digits is 18900, while the sum is 34.

The square root of 55716631 is about 7464.3573735453. The cubic root of 55716631 is about 381.9398290687.

The spelling of 55716631 in words is "fifty-five million, seven hundred sixteen thousand, six hundred thirty-one".