51818344 has 16 divisors (see below), whose sum is σ = 97723620. Its totient is φ = 25758720.

The previous prime is 51818293. The next prime is 51818357. The reversal of 51818344 is 44381815.

It can be written as a sum of positive squares in 2 ways, for example, as 48469444 + 3348900 = 6962^2 + 1830^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17337 + ... + 20104.

Almost surely, 2^51818344 is an apocalyptic number.

It is an amenable number.

51818344 is a deficient number, since it is larger than the sum of its proper divisors (45905276).

51818344 is a wasteful number, since it uses less digits than its factorization.

51818344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37620 (or 37616 counting only the distinct ones).

The product of its digits is 15360, while the sum is 34.

The square root of 51818344 is about 7198.4959540171. The cubic root of 51818344 is about 372.8159720112.

Subtracting from 51818344 its reverse (44381815), we obtain a square (7436529 = 2727²).

The spelling of 51818344 in words is "fifty-one million, eight hundred eighteen thousand, three hundred forty-four".