51204136 has 16 divisors (see below), whose sum is σ = 101655540. Its totient is φ = 24096000.

The previous prime is 51204133. The next prime is 51204143. The reversal of 51204136 is 63140215.

It can be written as a sum of positive squares in 2 ways, for example, as 50836900 + 367236 = 7130^2 + 606^2 .

It is not an unprimeable number, because it can be changed into a prime (51204133) 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, 188115 + ... + 188386.

Almost surely, 2^51204136 is an apocalyptic number.

It is an amenable number.

51204136 is a deficient number, since it is larger than the sum of its proper divisors (50451404).

51204136 is a wasteful number, since it uses less digits than its factorization.

51204136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376524 (or 376520 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 51204136 is about 7155.7065339490. The cubic root of 51204136 is about 371.3371051757.

The spelling of 51204136 in words is "fifty-one million, two hundred four thousand, one hundred thirty-six".