52504140 has 96 divisors (see below), whose sum is σ = 160425216. Its totient is φ = 12752640.

The previous prime is 52504139. The next prime is 52504157. The reversal of 52504140 is 4140525.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64335 + ... + 65145.

It is an arithmetic number, because the mean of its divisors is an integer number (1671096).

Almost surely, 2^52504140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52504140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80212608).

52504140 is an abundant number, since it is smaller than the sum of its proper divisors (107921076).

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

52504140 is a wasteful number, since it uses less digits than its factorization.

52504140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 919 (or 917 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 52504140 is about 7245.9740546044. The cubic root of 52504140 is about 374.4534616202.

Adding to 52504140 its reverse (4140525), we get a palindrome (56644665).

The spelling of 52504140 in words is "fifty-two million, five hundred four thousand, one hundred forty".