52515144 has 96 divisors (see below), whose sum is σ = 157847040. Its totient is φ = 15638400.

The previous prime is 52515139. The next prime is 52515163. The reversal of 52515144 is 44151525.

52515144 is a `hidden beast` number, since 5 + 2 + 515 + 144 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47769 + ... + 48855.

It is an arithmetic number, because the mean of its divisors is an integer number (1644240).

Almost surely, 2^52515144 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 52515144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78923520).

52515144 is an abundant number, since it is smaller than the sum of its proper divisors (105331896).

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

52515144 is a wasteful number, since it uses less digits than its factorization.

52515144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1171 (or 1164 counting only the distinct ones).

The product of its digits is 4000, while the sum is 27.

The square root of 52515144 is about 7246.7333330267. The cubic root of 52515144 is about 374.4796195452.

Adding to 52515144 its reverse (44151525), we get a palindrome (96666669).

The spelling of 52515144 in words is "fifty-two million, five hundred fifteen thousand, one hundred forty-four".