15056631 has 16 divisors (see below), whose sum is σ = 22540000. Its totient is φ = 9932544.

The previous prime is 15056627. The next prime is 15056641. The reversal of 15056631 is 13665051.

It is a happy number.

It is not a de Polignac number, because 15056631 - 2² = 15056627 is a prime.

It is a super-2 number, since 2×15056631² = 453404274140322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15056595 and 15056604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15056621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256 + ... + 5493.

It is an arithmetic number, because the mean of its divisors is an integer number (1408750).

Almost surely, 2^15056631 is an apocalyptic number.

15056631 is a deficient number, since it is larger than the sum of its proper divisors (7483369).

15056631 is an equidigital number, since it uses as much as digits as its factorization.

15056631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5855 (or 5849 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 15056631 is about 3880.2874893492. The cubic root of 15056631 is about 246.9311822356.

The spelling of 15056631 in words is "fifteen million, fifty-six thousand, six hundred thirty-one".