51612136 has 16 divisors (see below), whose sum is σ = 102465540. Its totient is φ = 24288000.

The previous prime is 51612133. The next prime is 51612149. The reversal of 51612136 is 63121615.

It can be written as a sum of positive squares in 2 ways, for example, as 49084036 + 2528100 = 7006^2 + 1590^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 51612136.

It is not an unprimeable number, because it can be changed into a prime (51612133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189615 + ... + 189886.

Almost surely, 2^51612136 is an apocalyptic number.

It is an amenable number.

51612136 is a deficient number, since it is larger than the sum of its proper divisors (50853404).

51612136 is a wasteful number, since it uses less digits than its factorization.

51612136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379524 (or 379520 counting only the distinct ones).

The product of its digits is 1080, while the sum is 25.

The square root of 51612136 is about 7184.1586842163. The cubic root of 51612136 is about 372.3207816165.

The spelling of 51612136 in words is "fifty-one million, six hundred twelve thousand, one hundred thirty-six".