52140172 has 24 divisors (see below), whose sum is σ = 108815616. Its totient is φ = 21373968.

The previous prime is 52140163. The next prime is 52140191. The reversal of 52140172 is 27104125.

It is a happy number.

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, 39838 + ... + 41125.

It is an arithmetic number, because the mean of its divisors is an integer number (4533984).

Almost surely, 2^52140172 is an apocalyptic number.

It is an amenable number.

52140172 is an abundant number, since it is smaller than the sum of its proper divisors (56675444).

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

52140172 is a wasteful number, since it uses less digits than its factorization.

52140172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80997 (or 80995 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 52140172 is about 7220.8151894367. The cubic root of 52140172 is about 373.5861952632.

Adding to 52140172 its reverse (27104125), we get a palindrome (79244297).

The spelling of 52140172 in words is "fifty-two million, one hundred forty thousand, one hundred seventy-two".