51330948 has 12 divisors (see below), whose sum is σ = 119772240. Its totient is φ = 17110312.

The previous prime is 51330943. The next prime is 51330959. The reversal of 51330948 is 84903315.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (51330943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2138778 + ... + 2138801.

It is an arithmetic number, because the mean of its divisors is an integer number (9981020).

Almost surely, 2^51330948 is an apocalyptic number.

It is an amenable number.

51330948 is an abundant number, since it is smaller than the sum of its proper divisors (68441292).

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

51330948 is a wasteful number, since it uses less digits than its factorization.

51330948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4277586 (or 4277584 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 51330948 is about 7164.5619545092. The cubic root of 51330948 is about 371.6434032195.

The spelling of 51330948 in words is "fifty-one million, three hundred thirty thousand, nine hundred forty-eight".