52391268 has 36 divisors (see below), whose sum is σ = 132778828. Its totient is φ = 17418240.

The previous prime is 52391237. The next prime is 52391281. The reversal of 52391268 is 86219325.

52391268 is a `hidden beast` number, since 5 + 2 + 391 + 268 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 21455424 + 30935844 = 4632^2 + 5562^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13908 + ... + 17268.

Almost surely, 2^52391268 is an apocalyptic number.

It is an amenable number.

52391268 is an abundant number, since it is smaller than the sum of its proper divisors (80387560).

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

52391268 is a wasteful number, since it uses less digits than its factorization.

52391268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3804 (or 3799 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 52391268 is about 7238.1812632733. The cubic root of 52391268 is about 374.1849390854.

The spelling of 52391268 in words is "fifty-two million, three hundred ninety-one thousand, two hundred sixty-eight".