52502240 has 48 divisors (see below), whose sum is σ = 141759072. Its totient is φ = 18000384.

The previous prime is 52502237. The next prime is 52502291. The reversal of 52502240 is 4220525.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22319 + ... + 24558.

It is an arithmetic number, because the mean of its divisors is an integer number (2953314).

Almost surely, 2^52502240 is an apocalyptic number.

It is an amenable number.

52502240 is an abundant number, since it is smaller than the sum of its proper divisors (89256832).

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

52502240 is a wasteful number, since it uses less digits than its factorization.

52502240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46899 (or 46891 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 52502240 is about 7245.8429461313. The cubic root of 52502240 is about 374.4489447056.

Adding to 52502240 its reverse (4220525), we get a palindrome (56722765).

The spelling of 52502240 in words is "fifty-two million, five hundred two thousand, two hundred forty".