51042404 has 12 divisors (see below), whose sum is σ = 102084864. Its totient is φ = 21875304.

The previous prime is 51042373. The next prime is 51042457. The reversal of 51042404 is 40424015.

51042404 is an admirable number.

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 3 ways as a sum of consecutive naturals, for example, 911444 + ... + 911499.

It is an arithmetic number, because the mean of its divisors is an integer number (8507072).

Almost surely, 2^51042404 is an apocalyptic number.

It is an amenable number.

51042404 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51042404 is a wasteful number, since it uses less digits than its factorization.

51042404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1822954 (or 1822952 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 51042404 is about 7144.3966855152. The cubic root of 51042404 is about 370.9457277067.

Adding to 51042404 its reverse (40424015), we get a palindrome (91466419).

The spelling of 51042404 in words is "fifty-one million, forty-two thousand, four hundred four".