56019631 has 2 divisors, whose sum is σ = 56019632. Its totient is φ = 56019630.

The previous prime is 56019599. The next prime is 56019659. The reversal of 56019631 is 13691065.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56019631 - 2⁵ = 56019599 is a prime.

It is a super-2 number, since 2×56019631² = 6276398114752322, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 56019593 and 56019602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56019671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28009815 + 28009816.

It is an arithmetic number, because the mean of its divisors is an integer number (28009816).

Almost surely, 2^56019631 is an apocalyptic number.

56019631 is a deficient number, since it is larger than the sum of its proper divisors (1).

56019631 is an equidigital number, since it uses as much as digits as its factorization.

56019631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 56019631 is about 7484.6263099770. The cubic root of 56019631 is about 382.6309369888.

The spelling of 56019631 in words is "fifty-six million, nineteen thousand, six hundred thirty-one".