51180880 has 40 divisors (see below), whose sum is σ = 125998632. Its totient is φ = 19267584.

The previous prime is 51180869. The next prime is 51180973. The reversal of 51180880 is 8808115.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5645376 + 45535504 = 2376^2 + 6748^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17457 + ... + 20176.

Almost surely, 2^51180880 is an apocalyptic number.

It is an amenable number.

51180880 is an abundant number, since it is smaller than the sum of its proper divisors (74817752).

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

51180880 is a wasteful number, since it uses less digits than its factorization.

51180880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37663 (or 37657 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 31.

The square root of 51180880 is about 7154.0813526266. The cubic root of 51180880 is about 371.2808784453.

Adding to 51180880 its reverse (8808115), we get a palindrome (59988995).

The spelling of 51180880 in words is "fifty-one million, one hundred eighty thousand, eight hundred eighty".