51718885 has 8 divisors (see below), whose sum is σ = 62937216. Its totient is φ = 40792080.

The previous prime is 51718873. The next prime is 51718903. The reversal of 51718885 is 58881715.

It is a happy number.

51718885 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51718885 - 2⁵ = 51718853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72489 + ... + 73198.

It is an arithmetic number, because the mean of its divisors is an integer number (7867152).

Almost surely, 2^51718885 is an apocalyptic number.

It is an amenable number.

51718885 is a deficient number, since it is larger than the sum of its proper divisors (11218331).

51718885 is a wasteful number, since it uses less digits than its factorization.

51718885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145763.

The product of its digits is 89600, while the sum is 43.

The square root of 51718885 is about 7191.5843177981. The cubic root of 51718885 is about 372.5772942916.

The spelling of 51718885 in words is "fifty-one million, seven hundred eighteen thousand, eight hundred eighty-five".