51080580 has 72 divisors (see below), whose sum is σ = 164068632. Its totient is φ = 12819456.

The previous prime is 51080573. The next prime is 51080593. The reversal of 51080580 is 8508015.

51080580 is a `hidden beast` number, since 5 + 1 + 0 + 80 + 580 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2304324 + 48776256 = 1518^2 + 6984^2 .

It is a super-3 number, since 3×51080580³ (a number of 24 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5287 + ... + 11406.

It is an arithmetic number, because the mean of its divisors is an integer number (2278731).

Almost surely, 2^51080580 is an apocalyptic number.

It is an amenable number.

51080580 is an abundant number, since it is smaller than the sum of its proper divisors (112988052).

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

51080580 is a wasteful number, since it uses less digits than its factorization.

51080580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16725 (or 16720 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 27.

The square root of 51080580 is about 7147.0679302774. The cubic root of 51080580 is about 371.0381847877.

Adding to 51080580 its reverse (8508015), we get a palindrome (59588595).

The spelling of 51080580 in words is "fifty-one million, eighty thousand, five hundred eighty".