51562613 has 2 divisors, whose sum is σ = 51562614. Its totient is φ = 51562612.

The previous prime is 51562591. The next prime is 51562631. The reversal of 51562613 is 31626515.

Together with next prime (51562631) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43850884 + 7711729 = 6622^2 + 2777^2 .

It is a cyclic number.

It is not a de Polignac number, because 51562613 - 2¹⁰ = 51561589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51562663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25781306 + 25781307.

It is an arithmetic number, because the mean of its divisors is an integer number (25781307).

Almost surely, 2^51562613 is an apocalyptic number.

It is an amenable number.

51562613 is a deficient number, since it is larger than the sum of its proper divisors (1).

51562613 is an equidigital number, since it uses as much as digits as its factorization.

51562613 is an evil number, because the sum of its binary digits is even.

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

The square root of 51562613 is about 7180.7111764783. The cubic root of 51562613 is about 372.2016601333.

The spelling of 51562613 in words is "fifty-one million, five hundred sixty-two thousand, six hundred thirteen".