51040004 has 24 divisors (see below), whose sum is σ = 95222400. Its totient is φ = 23868000.

The previous prime is 51039973. The next prime is 51040019. The reversal of 51040004 is 40004015.

51040004 = T₁₀₉₇ + T₁₀₉₈ + ... + T₁₁₇₅.

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 in 7 ways as a sum of consecutive naturals, for example, 1754 + ... + 10254.

It is an arithmetic number, because the mean of its divisors is an integer number (3967600).

Almost surely, 2^51040004 is an apocalyptic number.

It is an amenable number.

51040004 is a deficient number, since it is larger than the sum of its proper divisors (44182396).

51040004 is a wasteful number, since it uses less digits than its factorization.

51040004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8603 (or 8601 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 51040004 is about 7144.2287197430. The cubic root of 51040004 is about 370.9399136931.

Adding to 51040004 its reverse (40004015), we get a palindrome (91044019).

The spelling of 51040004 in words is "fifty-one million, forty thousand, four".