52387220 has 12 divisors (see below), whose sum is σ = 110013204. Its totient is φ = 20954880.

The previous prime is 52387213. The next prime is 52387249. The reversal of 52387220 is 2278325.

It can be written as a sum of positive squares in 2 ways, for example, as 28922884 + 23464336 = 5378^2 + 4844^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1309661 + ... + 1309700.

It is an arithmetic number, because the mean of its divisors is an integer number (9167767).

Almost surely, 2^52387220 is an apocalyptic number.

It is an amenable number.

52387220 is an abundant number, since it is smaller than the sum of its proper divisors (57625984).

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

52387220 is a wasteful number, since it uses less digits than its factorization.

52387220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2619370 (or 2619368 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 52387220 is about 7237.9016296161. The cubic root of 52387220 is about 374.1753017310.

The spelling of 52387220 in words is "fifty-two million, three hundred eighty-seven thousand, two hundred twenty".