51499008 has 156 divisors (see below), whose sum is σ = 163557888. Its totient is φ = 15482880.

The previous prime is 51498989. The next prime is 51499031. The reversal of 51499008 is 80099415.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 405441 + ... + 405567.

It is an arithmetic number, because the mean of its divisors is an integer number (1048448).

Almost surely, 2^51499008 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 51499008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81778944).

51499008 is an abundant number, since it is smaller than the sum of its proper divisors (112058880).

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

51499008 is a wasteful number, since it uses less digits than its factorization.

51499008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168 (or 143 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 51499008 is about 7176.2809309558. The cubic root of 51499008 is about 372.0485541896.

The spelling of 51499008 in words is "fifty-one million, four hundred ninety-nine thousand, eight".