51404808 has 64 divisors (see below), whose sum is σ = 158175360. Its totient is φ = 13556736.

The previous prime is 51404807. The next prime is 51404809. The reversal of 51404808 is 80840415.

It is an interprime number because it is at equal distance from previous prime (51404807) and next prime (51404809).

It is not an unprimeable number, because it can be changed into a prime (51404807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9585 + ... + 13952.

It is an arithmetic number, because the mean of its divisors is an integer number (2471490).

Almost surely, 2^51404808 is an apocalyptic number.

It is an amenable number.

51404808 is an abundant number, since it is smaller than the sum of its proper divisors (106770552).

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

51404808 is a wasteful number, since it uses less digits than its factorization.

51404808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23566 (or 23562 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 51404808 is about 7169.7146386729. The cubic root of 51404808 is about 371.8215701125.

The spelling of 51404808 in words is "fifty-one million, four hundred four thousand, eight hundred eight".