51148760 has 128 divisors (see below), whose sum is σ = 135475200. Its totient is φ = 17210880.

The previous prime is 51148759. The next prime is 51148777. The reversal of 51148760 is 6784115.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 306197 + ... + 306363.

It is an arithmetic number, because the mean of its divisors is an integer number (1058400).

Almost surely, 2^51148760 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51148760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67737600).

51148760 is an abundant number, since it is smaller than the sum of its proper divisors (84326440).

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

51148760 is a wasteful number, since it uses less digits than its factorization.

51148760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241 (or 237 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 51148760 is about 7151.8361278765. The cubic root of 51148760 is about 371.2031929410.

The spelling of 51148760 in words is "fifty-one million, one hundred forty-eight thousand, seven hundred sixty".