51330979 has 10 divisors (see below), whose sum is σ = 59885380. Its totient is φ = 43995924.

The previous prime is 51330959. The next prime is 51330991. The reversal of 51330979 is 97903315.

It is not a de Polignac number, because 51330979 - 2⁹ = 51330467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51330919) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 8289 + ... + 13090.

It is an arithmetic number, because the mean of its divisors is an integer number (5988538).

Almost surely, 2^51330979 is an apocalyptic number.

51330979 is a deficient number, since it is larger than the sum of its proper divisors (8554401).

51330979 is an frugal number, since it uses more digits than its factorization.

51330979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21407 (or 21386 counting only the distinct ones).

The product of its (nonzero) digits is 25515, while the sum is 37.

The square root of 51330979 is about 7164.5641179349. The cubic root of 51330979 is about 371.6434780343.

The spelling of 51330979 in words is "fifty-one million, three hundred thirty thousand, nine hundred seventy-nine".