51361804 has 18 divisors (see below), whose sum is σ = 97330380. Its totient is φ = 23705136.

The previous prime is 51361799. The next prime is 51361847. The reversal of 51361804 is 40816315.

It is a nialpdrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37314 + ... + 38665.

Almost surely, 2^51361804 is an apocalyptic number.

It is an amenable number.

51361804 is a deficient number, since it is larger than the sum of its proper divisors (45968576).

51361804 is a wasteful number, since it uses less digits than its factorization.

51361804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76009 (or 75994 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 51361804 is about 7166.7150075889. The cubic root of 51361804 is about 371.7178555872.

The spelling of 51361804 in words is "fifty-one million, three hundred sixty-one thousand, eight hundred four".