51562631 has 2 divisors, whose sum is σ = 51562632. Its totient is φ = 51562630.

The previous prime is 51562613. The next prime is 51562661. The reversal of 51562631 is 13626515.

Together with previous prime (51562613) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51562631 is a prime.

It is a super-2 number, since 2×51562631² = 5317409831284322, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 51562594 and 51562603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51562661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25781315 + 25781316.

It is an arithmetic number, because the mean of its divisors is an integer number (25781316).

Almost surely, 2^51562631 is an apocalyptic number.

51562631 is a deficient number, since it is larger than the sum of its proper divisors (1).

51562631 is an equidigital number, since it uses as much as digits as its factorization.

51562631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5400, while the sum is 29.

The square root of 51562631 is about 7180.7124298359. The cubic root of 51562631 is about 372.2017034439.

The spelling of 51562631 in words is "fifty-one million, five hundred sixty-two thousand, six hundred thirty-one".