51881160 has 32 divisors (see below), whose sum is σ = 155643840. Its totient is φ = 13834944.

The previous prime is 51881149. The next prime is 51881183. The reversal of 51881160 is 6118815.

It is a happy number.

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

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, 216052 + ... + 216291.

It is an arithmetic number, because the mean of its divisors is an integer number (4863870).

Almost surely, 2^51881160 is an apocalyptic number.

It is an amenable number.

51881160 is an abundant number, since it is smaller than the sum of its proper divisors (103762680).

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

51881160 is a wasteful number, since it uses less digits than its factorization.

51881160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432357 (or 432353 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 30.

The square root of 51881160 is about 7202.8577661925. The cubic root of 51881160 is about 372.9665580111.

Adding to 51881160 its reverse (6118815), we get a palindrome (57999975).

The spelling of 51881160 in words is "fifty-one million, eight hundred eighty-one thousand, one hundred sixty".