51318885 has 16 divisors (see below), whose sum is σ = 82200384. Its totient is φ = 27340032.

The previous prime is 51318881. The next prime is 51318887. The reversal of 51318885 is 58881315.

It is not a de Polignac number, because 51318885 - 2² = 51318881 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51318881) 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 15 ways as a sum of consecutive naturals, for example, 22194 + ... + 24396.

It is an arithmetic number, because the mean of its divisors is an integer number (5137524).

Almost surely, 2^51318885 is an apocalyptic number.

It is an amenable number.

51318885 is a deficient number, since it is larger than the sum of its proper divisors (30881499).

51318885 is a wasteful number, since it uses less digits than its factorization.

51318885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3764.

The product of its digits is 38400, while the sum is 39.

The square root of 51318885 is about 7163.7200531567. The cubic root of 51318885 is about 371.6142883237.

The spelling of 51318885 in words is "fifty-one million, three hundred eighteen thousand, eight hundred eighty-five".