52390272 has 128 divisors (see below), whose sum is σ = 154713600. Its totient is φ = 15575040.

The previous prime is 52390271. The next prime is 52390291. The reversal of 52390272 is 27209325.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52390271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 333618 + ... + 333774.

It is an arithmetic number, because the mean of its divisors is an integer number (1208700).

Almost surely, 2^52390272 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 52390272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77356800).

52390272 is an abundant number, since it is smaller than the sum of its proper divisors (102323328).

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

52390272 is a wasteful number, since it uses less digits than its factorization.

52390272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264 (or 252 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 52390272 is about 7238.1124611324. The cubic root of 52390272 is about 374.1825678851.

Adding to 52390272 its reverse (27209325), we get a palindrome (79599597).

The spelling of 52390272 in words is "fifty-two million, three hundred ninety thousand, two hundred seventy-two".