51900931 has 2 divisors, whose sum is σ = 51900932. Its totient is φ = 51900930.

The previous prime is 51900907. The next prime is 51900941. The reversal of 51900931 is 13900915.

51900931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51900931 - 2⁷ = 51900803 is a prime.

It is a super-2 number, since 2×51900931² = 5387413277333522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51900931.

It is not a weakly prime, because it can be changed into another prime (51900941) 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 as a sum of consecutive naturals, namely, 25950465 + 25950466.

It is an arithmetic number, because the mean of its divisors is an integer number (25950466).

Almost surely, 2^51900931 is an apocalyptic number.

51900931 is a deficient number, since it is larger than the sum of its proper divisors (1).

51900931 is an equidigital number, since it uses as much as digits as its factorization.

51900931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1215, while the sum is 28.

The square root of 51900931 is about 7204.2300768368. The cubic root of 51900931 is about 373.0139289985.

The spelling of 51900931 in words is "fifty-one million, nine hundred thousand, nine hundred thirty-one".