51927631 has 4 divisors (see below), whose sum is σ = 59345872. Its totient is φ = 44509392.

The previous prime is 51927599. The next prime is 51927643. The reversal of 51927631 is 13672915.

51927631 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 51927631 - 2⁵ = 51927599 is a prime.

It is a super-2 number, since 2×51927631² = 5392957722544322, 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 (51927691) 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, 3709110 + ... + 3709123.

It is an arithmetic number, because the mean of its divisors is an integer number (14836468).

Almost surely, 2^51927631 is an apocalyptic number.

51927631 is a deficient number, since it is larger than the sum of its proper divisors (7418241).

51927631 is an equidigital number, since it uses as much as digits as its factorization.

51927631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7418240.

The product of its digits is 11340, while the sum is 34.

The square root of 51927631 is about 7206.0829165366. The cubic root of 51927631 is about 373.0778826652.

The spelling of 51927631 in words is "fifty-one million, nine hundred twenty-seven thousand, six hundred thirty-one".