51768306 has 24 divisors (see below), whose sum is σ = 116033580. Its totient is φ = 16660896.

The previous prime is 51768289. The next prime is 51768323. The reversal of 51768306 is 60386715.

It is an interprime number because it is at equal distance from previous prime (51768289) and next prime (51768323).

It can be written as a sum of positive squares in 2 ways, for example, as 49491225 + 2277081 = 7035^2 + 1509^2 .

It is a super-2 number, since 2×51768306² = 5359915012219272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49065 + ... + 50108.

Almost surely, 2^51768306 is an apocalyptic number.

51768306 is an abundant number, since it is smaller than the sum of its proper divisors (64265274).

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

51768306 is a wasteful number, since it uses less digits than its factorization.

51768306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99210 (or 99207 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 51768306 is about 7195.0195274231. The cubic root of 51768306 is about 372.6959310369.

The spelling of 51768306 in words is "fifty-one million, seven hundred sixty-eight thousand, three hundred six".