51330506 has 8 divisors (see below), whose sum is σ = 77164164. Its totient is φ = 25609120.

The previous prime is 51330491. The next prime is 51330511. The reversal of 51330506 is 60503315.

51330506 = 76² + 77² + ... + 536².

It can be written as a sum of positive squares in 2 ways, for example, as 50623225 + 707281 = 7115^2 + 841^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26915 + ... + 28758.

Almost surely, 2^51330506 is an apocalyptic number.

51330506 is a deficient number, since it is larger than the sum of its proper divisors (25833658).

51330506 is a wasteful number, since it uses less digits than its factorization.

51330506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56136.

The product of its (nonzero) digits is 1350, while the sum is 23.

The square root of 51330506 is about 7164.5311081745. The cubic root of 51330506 is about 371.6423365020.

The spelling of 51330506 in words is "fifty-one million, three hundred thirty thousand, five hundred six".