51493008 has 80 divisors (see below), whose sum is σ = 152815616. Its totient is φ = 14636160.

The previous prime is 51493003. The next prime is 51493031. The reversal of 51493008 is 80039415.

It is not an unprimeable number, because it can be changed into a prime (51493003) 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, 110985 + ... + 111447.

Almost surely, 2^51493008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51493008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76407808).

51493008 is an abundant number, since it is smaller than the sum of its proper divisors (101322608).

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

51493008 is a wasteful number, since it uses less digits than its factorization.

51493008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812 (or 806 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 51493008 is about 7175.8628749440. The cubic root of 51493008 is about 372.0341048625.

The spelling of 51493008 in words is "fifty-one million, four hundred ninety-three thousand, eight".