52140288 has 36 divisors (see below), whose sum is σ = 138771248. Its totient is φ = 17379840.

The previous prime is 52140211. The next prime is 52140293. The reversal of 52140288 is 88204125.

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, 33178 + ... + 34713.

Almost surely, 2^52140288 is an apocalyptic number.

It is an amenable number.

52140288 is an abundant number, since it is smaller than the sum of its proper divisors (86630960).

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

52140288 is an equidigital number, since it uses as much as digits as its factorization.

52140288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67910 (or 67896 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 52140288 is about 7220.8232217663. The cubic root of 52140288 is about 373.5864723110.

The spelling of 52140288 in words is "fifty-two million, one hundred forty thousand, two hundred eighty-eight".