51436804 has 6 divisors (see below), whose sum is σ = 90014414. Its totient is φ = 25718400.

The previous prime is 51436799. The next prime is 51436813. The reversal of 51436804 is 40863415.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 40347904 + 11088900 = 6352^2 + 3330^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6429597 + ... + 6429604.

Almost surely, 2^51436804 is an apocalyptic number.

It is an amenable number.

51436804 is a deficient number, since it is larger than the sum of its proper divisors (38577610).

51436804 is a wasteful number, since it uses less digits than its factorization.

51436804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12859205 (or 12859203 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 51436804 is about 7171.9456216567. The cubic root of 51436804 is about 371.8986986663.

The spelling of 51436804 in words is "fifty-one million, four hundred thirty-six thousand, eight hundred four".