51865296 has 80 divisors (see below), whose sum is σ = 154228224. Its totient is φ = 14712192.

The previous prime is 51865279. The next prime is 51865301. The reversal of 51865296 is 69256815.

51865296 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54295 + ... + 55241.

Almost surely, 2^51865296 is an apocalyptic number.

51865296 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51865296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77114112).

51865296 is an abundant number, since it is smaller than the sum of its proper divisors (102362928).

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

51865296 is a wasteful number, since it uses less digits than its factorization.

51865296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1128 (or 1122 counting only the distinct ones).

The product of its digits is 129600, while the sum is 42.

The square root of 51865296 is about 7201.7564524219. The cubic root of 51865296 is about 372.9285394276.

The spelling of 51865296 in words is "fifty-one million, eight hundred sixty-five thousand, two hundred ninety-six".