56051631 has 6 divisors (see below), whose sum is σ = 80963480. Its totient is φ = 37367748.

The previous prime is 56051609. The next prime is 56051647. The reversal of 56051631 is 13615065.

It is a happy number.

It is not a de Polignac number, because 56051631 - 2⁵ = 56051599 is a prime.

It is a super-2 number, since 2×56051631² = 6283570675520322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56051595 and 56051604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56051651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3113971 + ... + 3113988.

Almost surely, 2^56051631 is an apocalyptic number.

56051631 is a deficient number, since it is larger than the sum of its proper divisors (24911849).

56051631 is a wasteful number, since it uses less digits than its factorization.

56051631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6227965 (or 6227962 counting only the distinct ones).

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

The square root of 56051631 is about 7486.7637200596. The cubic root of 56051631 is about 382.7037796637.

Adding to 56051631 its reverse (13615065), we get a palindrome (69666696).

The spelling of 56051631 in words is "fifty-six million, fifty-one thousand, six hundred thirty-one".