51400004 has 12 divisors (see below), whose sum is σ = 90015744. Its totient is φ = 25681224.

The previous prime is 51400001. The next prime is 51400039. The reversal of 51400004 is 40000415.

It is a super-2 number, since 2×51400004² = 5283920822400032, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51400001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2789 + ... + 10515.

It is an arithmetic number, because the mean of its divisors is an integer number (7501312).

Almost surely, 2^51400004 is an apocalyptic number.

It is an amenable number.

51400004 is a deficient number, since it is larger than the sum of its proper divisors (38615740).

51400004 is a wasteful number, since it uses less digits than its factorization.

51400004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9394 (or 9392 counting only the distinct ones).

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

The square root of 51400004 is about 7169.3796105381. The cubic root of 51400004 is about 371.8099869776.

Adding to 51400004 its reverse (40000415), we get a palindrome (91400419).

The spelling of 51400004 in words is "fifty-one million, four hundred thousand, four".