52012140 has 24 divisors (see below), whose sum is σ = 145634160. Its totient is φ = 13869888.

The previous prime is 52012117. The next prime is 52012151. The reversal of 52012140 is 4121025.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 433375 + ... + 433494.

It is an arithmetic number, because the mean of its divisors is an integer number (6068090).

Almost surely, 2^52012140 is an apocalyptic number.

It is an amenable number.

52012140 is an abundant number, since it is smaller than the sum of its proper divisors (93622020).

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

52012140 is a wasteful number, since it uses less digits than its factorization.

52012140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866881 (or 866879 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 52012140 is about 7211.9442593520. The cubic root of 52012140 is about 373.2801600148.

Adding to 52012140 its reverse (4121025), we get a palindrome (56133165).

The spelling of 52012140 in words is "fifty-two million, twelve thousand, one hundred forty".