51168004 has 12 divisors (see below), whose sum is σ = 89658828. Its totient is φ = 25551200.

The previous prime is 51167999. The next prime is 51168017. The reversal of 51168004 is 40086115.

It can be written as a sum of positive squares in 2 ways, for example, as 14807104 + 36360900 = 3848^2 + 6030^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 51168004.

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, 4507 + ... + 11074.

It is an arithmetic number, because the mean of its divisors is an integer number (7471569).

Almost surely, 2^51168004 is an apocalyptic number.

It is an amenable number.

51168004 is a deficient number, since it is larger than the sum of its proper divisors (38490824).

51168004 is a wasteful number, since it uses less digits than its factorization.

51168004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16406 (or 16404 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 51168004 is about 7153.1813901229. The cubic root of 51168004 is about 371.2497404269.

The spelling of 51168004 in words is "fifty-one million, one hundred sixty-eight thousand, four".