51164488 has 16 divisors (see below), whose sum is σ = 98526780. Its totient is φ = 24890688.

The previous prime is 51164471. The next prime is 51164521. The reversal of 51164488 is 88446115.

It can be written as a sum of positive squares in 2 ways, for example, as 50951044 + 213444 = 7138^2 + 462^2 .

It is a Harshad number since it is a multiple of its sum of digits (37).

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 3 ways as a sum of consecutive naturals, for example, 86131 + ... + 86722.

Almost surely, 2^51164488 is an apocalyptic number.

It is an amenable number.

51164488 is a deficient number, since it is larger than the sum of its proper divisors (47362292).

51164488 is a wasteful number, since it uses less digits than its factorization.

51164488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172896 (or 172892 counting only the distinct ones).

The product of its digits is 30720, while the sum is 37.

The square root of 51164488 is about 7152.9356211279. The cubic root of 51164488 is about 371.2412367795.

It can be divided in two parts, 5116 and 4488, that added together give a square (9604 = 98²).

The spelling of 51164488 in words is "fifty-one million, one hundred sixty-four thousand, four hundred eighty-eight".