51330504 has 32 divisors (see below), whose sum is σ = 128852640. Its totient is φ = 17040000.

The previous prime is 51330491. The next prime is 51330511. The reversal of 51330504 is 40503315.

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, 1764 + ... + 10284.

It is an arithmetic number, because the mean of its divisors is an integer number (4026645).

Almost surely, 2^51330504 is an apocalyptic number.

It is an amenable number.

51330504 is an abundant number, since it is smaller than the sum of its proper divisors (77522136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51330504 is a wasteful number, since it uses less digits than its factorization.

51330504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8781 (or 8777 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 51330504 is about 7164.5309685980. The cubic root of 51330504 is about 371.6423316752.

Adding to 51330504 its reverse (40503315), we get a palindrome (91833819).

The spelling of 51330504 in words is "fifty-one million, three hundred thirty thousand, five hundred four".