51518016 has 168 divisors, whose sum is σ = 165469824. Its totient is φ = 15191040.

The previous prime is 51517957. The next prime is 51518021. The reversal of 51518016 is 61081515.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 297706 + ... + 297878.

Almost surely, 2^51518016 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 51518016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82734912).

51518016 is an abundant number, since it is smaller than the sum of its proper divisors (113951808).

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

51518016 is a wasteful number, since it uses less digits than its factorization.

51518016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249 (or 236 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 27.

The square root of 51518016 is about 7177.6051716433. The cubic root of 51518016 is about 372.0943222493.

The spelling of 51518016 in words is "fifty-one million, five hundred eighteen thousand, sixteen".