51975295231 has 2 divisors, whose sum is σ = 51975295232. Its totient is φ = 51975295230.

The previous prime is 51975295171. The next prime is 51975295241. The reversal of 51975295231 is 13259257915.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51975295231 - 2²³ = 51966906623 is a prime.

It is a super-2 number, since 2×51975295231² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51975295241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25987647615 + 25987647616.

It is an arithmetic number, because the mean of its divisors is an integer number (25987647616).

Almost surely, 2^51975295231 is an apocalyptic number.

51975295231 is a deficient number, since it is larger than the sum of its proper divisors (1).

51975295231 is an equidigital number, since it uses as much as digits as its factorization.

51975295231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 850500, while the sum is 49.

The spelling of 51975295231 in words is "fifty-one billion, nine hundred seventy-five million, two hundred ninety-five thousand, two hundred thirty-one".