51544116 has 72 divisors (see below), whose sum is σ = 141205064. Its totient is φ = 15759360.

The previous prime is 51544109. The next prime is 51544121. The reversal of 51544116 is 61144515.

51544116 is a `hidden beast` number, since 5 + 1 + 544 + 116 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 13351716 + 38192400 = 3654^2 + 6180^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 51544116.

It is a congruent number.

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, 112560 + ... + 113016.

Almost surely, 2^51544116 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 51544116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70602532).

51544116 is an abundant number, since it is smaller than the sum of its proper divisors (89660948).

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

51544116 is a wasteful number, since it uses less digits than its factorization.

51544116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721 (or 716 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 51544116 is about 7179.4230966005. The cubic root of 51544116 is about 372.1571483116.

The spelling of 51544116 in words is "fifty-one million, five hundred forty-four thousand, one hundred sixteen".