51022520231 has 2 divisors, whose sum is σ = 51022520232. Its totient is φ = 51022520230.

The previous prime is 51022520207. The next prime is 51022520287. The reversal of 51022520231 is 13202522015.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51022520231 is a prime.

It is a super-2 number, since 2×51022520231² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51022520197 and 51022520206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51022523231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25511260115 + 25511260116.

It is an arithmetic number, because the mean of its divisors is an integer number (25511260116).

Almost surely, 2^51022520231 is an apocalyptic number.

51022520231 is a deficient number, since it is larger than the sum of its proper divisors (1).

51022520231 is an equidigital number, since it uses as much as digits as its factorization.

51022520231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 23.

The spelling of 51022520231 in words is "fifty-one billion, twenty-two million, five hundred twenty thousand, two hundred thirty-one".