52256140 has 24 divisors (see below), whose sum is σ = 112416192. Its totient is φ = 20392320.

The previous prime is 52256129. The next prime is 52256153. The reversal of 52256140 is 4165225.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31044 + ... + 32683.

It is an arithmetic number, because the mean of its divisors is an integer number (4684008).

Almost surely, 2^52256140 is an apocalyptic number.

It is an amenable number.

52256140 is an abundant number, since it is smaller than the sum of its proper divisors (60160052).

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

52256140 is a wasteful number, since it uses less digits than its factorization.

52256140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63777 (or 63775 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 52256140 is about 7228.8408476048. The cubic root of 52256140 is about 373.8629617948.

The spelling of 52256140 in words is "fifty-two million, two hundred fifty-six thousand, one hundred forty".