51264004 has 24 divisors (see below), whose sum is σ = 98060256. Its totient is φ = 23256000.

The previous prime is 51263999. The next prime is 51264013. The reversal of 51264004 is 40046215.

It is a super-2 number, since 2×51264004² = 5255996212224032, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32719 + ... + 34249.

It is an arithmetic number, because the mean of its divisors is an integer number (4085844).

Almost surely, 2^51264004 is an apocalyptic number.

It is an amenable number.

51264004 is a deficient number, since it is larger than the sum of its proper divisors (46796252).

51264004 is a wasteful number, since it uses less digits than its factorization.

51264004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2307 (or 2305 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 51264004 is about 7159.8885466186. Note that the first 3 decimals coincide. The cubic root of 51264004 is about 371.4817715570.

It can be divided in two parts, 512 and 64004, that added together give a square (64516 = 254²).

The spelling of 51264004 in words is "fifty-one million, two hundred sixty-four thousand, four".