51550116 has 48 divisors (see below), whose sum is σ = 127196160. Its totient is φ = 16204320.

The previous prime is 51550099. The next prime is 51550159. The reversal of 51550116 is 61105515.

It is a super-2 number, since 2×51550116² = 5314828919226912, which contains 22 as substring.

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, 70545 + ... + 71271.

It is an arithmetic number, because the mean of its divisors is an integer number (2649920).

Almost surely, 2^51550116 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 51550116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63598080).

51550116 is an abundant number, since it is smaller than the sum of its proper divisors (75646044).

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

51550116 is a wasteful number, since it uses less digits than its factorization.

51550116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064 (or 1062 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 24.

The square root of 51550116 is about 7179.8409453135. The cubic root of 51550116 is about 372.1715880862.

The spelling of 51550116 in words is "fifty-one million, five hundred fifty thousand, one hundred sixteen".