51042004 has 12 divisors (see below), whose sum is σ = 96194644. Its totient is φ = 23557824.

The previous prime is 51041957. The next prime is 51042053. The reversal of 51042004 is 40024015.

51042004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 19096900 + 31945104 = 4370^2 + 5652^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 490737 + ... + 490840.

Almost surely, 2^51042004 is an apocalyptic number.

It is an amenable number.

51042004 is a deficient number, since it is larger than the sum of its proper divisors (45152640).

51042004 is a wasteful number, since it uses less digits than its factorization.

51042004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981594 (or 981592 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 51042004 is about 7144.3686914940. The cubic root of 51042004 is about 370.9447587171.

Adding to 51042004 its reverse (40024015), we get a palindrome (91066019).

The spelling of 51042004 in words is "fifty-one million, forty-two thousand, four".