51208716 has 48 divisors (see below), whose sum is σ = 129968384. Its totient is φ = 15598656.

The previous prime is 51208699. The next prime is 51208721. The reversal of 51208716 is 61780215.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14475 + ... + 17661.

Almost surely, 2^51208716 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 51208716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64984192).

51208716 is an abundant number, since it is smaller than the sum of its proper divisors (78759668).

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

51208716 is a wasteful number, since it uses less digits than its factorization.

51208716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3310 (or 3308 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 51208716 is about 7156.0265510966. The cubic root of 51208716 is about 371.3481763728.

The spelling of 51208716 in words is "fifty-one million, two hundred eight thousand, seven hundred sixteen".