52644372 has 24 divisors (see below), whose sum is σ = 134004192. Its totient is φ = 15952800.

The previous prime is 52644353. The next prime is 52644373. The reversal of 52644372 is 27344625.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52644373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199279 + ... + 199542.

It is an arithmetic number, because the mean of its divisors is an integer number (5583508).

Almost surely, 2^52644372 is an apocalyptic number.

It is an amenable number.

52644372 is an abundant number, since it is smaller than the sum of its proper divisors (81359820).

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

52644372 is a wasteful number, since it uses less digits than its factorization.

52644372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398839 (or 398837 counting only the distinct ones).

The product of its digits is 40320, while the sum is 33.

The square root of 52644372 is about 7255.6441478342. The cubic root of 52644372 is about 374.7865380693.

Adding to 52644372 its reverse (27344625), we get a palindrome (79988997).

The spelling of 52644372 in words is "fifty-two million, six hundred forty-four thousand, three hundred seventy-two".