52507140 has 48 divisors (see below), whose sum is σ = 168024192. Its totient is φ = 12001536.

The previous prime is 52507129. The next prime is 52507141. The reversal of 52507140 is 4170525.

It is a self number, because there is not a number n which added to its sum of digits gives 52507140.

It is not an unprimeable number, because it can be changed into a prime (52507141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62089 + ... + 62928.

It is an arithmetic number, because the mean of its divisors is an integer number (3500504).

Almost surely, 2^52507140 is an apocalyptic number.

It is an amenable number.

52507140 is an abundant number, since it is smaller than the sum of its proper divisors (115517052).

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

52507140 is a wasteful number, since it uses less digits than its factorization.

52507140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125036 (or 125034 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 52507140 is about 7246.1810631532. The cubic root of 52507140 is about 374.4605933689.

Adding to 52507140 its reverse (4170525), we get a palindrome (56677665).

The spelling of 52507140 in words is "fifty-two million, five hundred seven thousand, one hundred forty".