53136637 has 2 divisors, whose sum is σ = 53136638. Its totient is φ = 53136636.

The previous prime is 53136623. The next prime is 53136659. The reversal of 53136637 is 73663135.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52693081 + 443556 = 7259^2 + 666^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53136637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53136607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26568318 + 26568319.

It is an arithmetic number, because the mean of its divisors is an integer number (26568319).

Almost surely, 2^53136637 is an apocalyptic number.

It is an amenable number.

53136637 is a deficient number, since it is larger than the sum of its proper divisors (1).

53136637 is an equidigital number, since it uses as much as digits as its factorization.

53136637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34020, while the sum is 34.

The square root of 53136637 is about 7289.4881164592. The cubic root of 53136637 is about 375.9510956654.

The spelling of 53136637 in words is "fifty-three million, one hundred thirty-six thousand, six hundred thirty-seven".