51580120 has 32 divisors (see below), whose sum is σ = 116902800. Its totient is φ = 20481408.

The previous prime is 51580073. The next prime is 51580129. The reversal of 51580120 is 2108515.

It is a junction number, because it is equal to n+sod(n) for n = 51580091 and 51580100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51580129) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 922 + ... + 10198.

Almost surely, 2^51580120 is an apocalyptic number.

It is an amenable number.

51580120 is an abundant number, since it is smaller than the sum of its proper divisors (65322680).

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

51580120 is a wasteful number, since it uses less digits than its factorization.

51580120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9427 (or 9423 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 51580120 is about 7181.9301026952. The cubic root of 51580120 is about 372.2437797800.

Adding to 51580120 its reverse (2108515), we get a palindrome (53688635).

The spelling of 51580120 in words is "fifty-one million, five hundred eighty thousand, one hundred twenty".