51080004 has 24 divisors (see below), whose sum is σ = 132429920. Its totient is φ = 17026632.

The previous prime is 51079967. The next prime is 51080011. The reversal of 51080004 is 40008015.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 236374 + ... + 236589.

Almost surely, 2^51080004 is an apocalyptic number.

51080004 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

51080004 is an abundant number, since it is smaller than the sum of its proper divisors (81349916).

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

51080004 is a wasteful number, since it uses less digits than its factorization.

51080004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472976 (or 472968 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 51080004 is about 7147.0276339189. The cubic root of 51080004 is about 371.0367901364.

Adding to 51080004 its reverse (40008015), we get a palindrome (91088019).

The spelling of 51080004 in words is "fifty-one million, eighty thousand, four".