51336538 has 16 divisors (see below), whose sum is σ = 86277024. Its totient is φ = 22703760.

The previous prime is 51336517. The next prime is 51336553. The reversal of 51336538 is 83563315.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30720 + ... + 32347.

It is an arithmetic number, because the mean of its divisors is an integer number (5392314).

Almost surely, 2^51336538 is an apocalyptic number.

51336538 is a deficient number, since it is larger than the sum of its proper divisors (34940486).

51336538 is a wasteful number, since it uses less digits than its factorization.

51336538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63117.

The product of its digits is 32400, while the sum is 34.

The square root of 51336538 is about 7164.9520584579. The cubic root of 51336538 is about 371.6568935296.

The spelling of 51336538 in words is "fifty-one million, three hundred thirty-six thousand, five hundred thirty-eight".