51860016 has 90 divisors (see below), whose sum is σ = 157232868. Its totient is φ = 15949440.

The previous prime is 51859991. The next prime is 51860071. The reversal of 51860016 is 61006815.

51860016 is a `hidden beast` number, since 51 + 8 + 600 + 1 + 6 = 666.

It is a super-2 number, since 2×51860016² = 5378922519040512, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 23271 + ... + 25401.

Almost surely, 2^51860016 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 51860016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78616434).

51860016 is an abundant number, since it is smaller than the sum of its proper divisors (105372852).

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

51860016 is a wasteful number, since it uses less digits than its factorization.

51860016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2171 (or 2149 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 51860016 is about 7201.3898658523. The cubic root of 51860016 is about 372.9158840192.

The spelling of 51860016 in words is "fifty-one million, eight hundred sixty thousand, sixteen".