51112004 has 6 divisors (see below), whose sum is σ = 89446014. Its totient is φ = 25556000.

The previous prime is 51111989. The next prime is 51112043. The reversal of 51112004 is 40021115.

It can be written as a sum of positive squares in only one way, i.e., 45589504 + 5522500 = 6752^2 + 2350^2 .

It is a super-2 number, since 2×51112004² = 5224873905792032, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51112004.

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 as a sum of consecutive naturals, namely, 6388997 + ... + 6389004.

It is an arithmetic number, because the mean of its divisors is an integer number (14907669).

Almost surely, 2^51112004 is an apocalyptic number.

It is an amenable number.

51112004 is a deficient number, since it is larger than the sum of its proper divisors (38334010).

51112004 is a wasteful number, since it uses less digits than its factorization.

51112004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12778005 (or 12778003 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 51112004 is about 7149.2659763083. The cubic root of 51112004 is about 371.1142548834.

Adding to 51112004 its reverse (40021115), we get a palindrome (91133119).

The spelling of 51112004 in words is "fifty-one million, one hundred twelve thousand, four".