56198631 has 4 divisors (see below), whose sum is σ = 74931512. Its totient is φ = 37465752.

The previous prime is 56198587. The next prime is 56198641. The reversal of 56198631 is 13689165.

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

It is not a de Polignac number, because 56198631 - 2¹⁰ = 56197607 is a prime.

It is a super-2 number, since 2×56198631² = 6316572252548322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56198631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56198641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9366436 + ... + 9366441.

It is an arithmetic number, because the mean of its divisors is an integer number (18732878).

Almost surely, 2^56198631 is an apocalyptic number.

56198631 is a deficient number, since it is larger than the sum of its proper divisors (18732881).

56198631 is a wasteful number, since it uses less digits than its factorization.

56198631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18732880.

The product of its digits is 38880, while the sum is 39.

The square root of 56198631 is about 7496.5746177838. The cubic root of 56198631 is about 383.0380449724.

The spelling of 56198631 in words is "fifty-six million, one hundred ninety-eight thousand, six hundred thirty-one".