51856160 has 24 divisors (see below), whose sum is σ = 122510556. Its totient is φ = 20742400.

The previous prime is 51856157. The next prime is 51856177. The reversal of 51856160 is 6165815.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 46076944 + 5779216 = 6788^2 + 2404^2 .

It is a super-3 number, since 3×51856160³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161891 + ... + 162210.

Almost surely, 2^51856160 is an apocalyptic number.

It is an amenable number.

51856160 is an abundant number, since it is smaller than the sum of its proper divisors (70654396).

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

51856160 is a wasteful number, since it uses less digits than its factorization.

51856160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324116 (or 324108 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 51856160 is about 7201.1221347787. The cubic root of 51856160 is about 372.9066411933.

The spelling of 51856160 in words is "fifty-one million, eight hundred fifty-six thousand, one hundred sixty".