51276180 has 48 divisors (see below), whose sum is σ = 143889984. Its totient is φ = 13643520.

The previous prime is 51276163. The next prime is 51276187. The reversal of 51276180 is 8167215.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51276187) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45099 + ... + 46221.

It is an arithmetic number, because the mean of its divisors is an integer number (2997708).

Almost surely, 2^51276180 is an apocalyptic number.

It is an amenable number.

51276180 is an abundant number, since it is smaller than the sum of its proper divisors (92613804).

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

51276180 is a wasteful number, since it uses less digits than its factorization.

51276180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1896 (or 1894 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 51276180 is about 7160.7387887005. The cubic root of 51276180 is about 371.5111801324.

The spelling of 51276180 in words is "fifty-one million, two hundred seventy-six thousand, one hundred eighty".