51801160 has 32 divisors (see below), whose sum is σ = 117631800. Its totient is φ = 20530368.

The previous prime is 51801157. The next prime is 51801179. The reversal of 51801160 is 6110815.

It can be written as a sum of positive squares in 4 ways, for example, as 37527876 + 14273284 = 6126^2 + 3778^2 .

It is an unprimeable number.

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, 475186 + ... + 475294.

Almost surely, 2^51801160 is an apocalyptic number.

It is an amenable number.

51801160 is an abundant number, since it is smaller than the sum of its proper divisors (65830640).

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

51801160 is an frugal number, since it uses more digits than its factorization.

51801160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338 (or 116 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 22.

The square root of 51801160 is about 7197.3022723796. The cubic root of 51801160 is about 372.7747563755.

Adding to 51801160 its reverse (6110815), we get a palindrome (57911975).

The spelling of 51801160 in words is "fifty-one million, eight hundred one thousand, one hundred sixty".