52639224 has 64 divisors (see below), whose sum is σ = 146931840. Its totient is φ = 15576960.

The previous prime is 52639219. The next prime is 52639231. The reversal of 52639224 is 42293625.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9034 + ... + 13670.

It is an arithmetic number, because the mean of its divisors is an integer number (2295810).

Almost surely, 2^52639224 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 52639224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73465920).

52639224 is an abundant number, since it is smaller than the sum of its proper divisors (94292616).

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

52639224 is a wasteful number, since it uses less digits than its factorization.

52639224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4700 (or 4696 counting only the distinct ones).

The product of its digits is 25920, while the sum is 33.

The square root of 52639224 is about 7255.2893808586. The cubic root of 52639224 is about 374.7743211002.

The spelling of 52639224 in words is "fifty-two million, six hundred thirty-nine thousand, two hundred twenty-four".