51039120 has 80 divisors (see below), whose sum is σ = 172613952. Its totient is φ = 12372480.

The previous prime is 51039103. The next prime is 51039173. The reversal of 51039120 is 2193015.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7027 + ... + 12306.

Almost surely, 2^51039120 is an apocalyptic number.

It is an amenable number.

51039120 is an abundant number, since it is smaller than the sum of its proper divisors (121574832).

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

51039120 is a wasteful number, since it uses less digits than its factorization.

51039120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19360 (or 19354 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 51039120 is about 7144.1668513550. The cubic root of 51039120 is about 370.9377721521.

The spelling of 51039120 in words is "fifty-one million, thirty-nine thousand, one hundred twenty".