52512404 has 48 divisors (see below), whose sum is σ = 111191808. Its totient is φ = 21212928.

The previous prime is 52512401. The next prime is 52512407. The reversal of 52512404 is 40421525.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (52512401) and next prime (52512407).

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a self number, because there is not a number n which added to its sum of digits gives 52512404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52512401) 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, 46454 + ... + 47570.

It is an arithmetic number, because the mean of its divisors is an integer number (2316496).

Almost surely, 2^52512404 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 52512404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55595904).

52512404 is an abundant number, since it is smaller than the sum of its proper divisors (58679404).

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

52512404 is a wasteful number, since it uses less digits than its factorization.

52512404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1224 (or 1222 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 52512404 is about 7246.5442798620. The cubic root of 52512404 is about 374.4731065540.

Adding to 52512404 its reverse (40421525), we get a palindrome (92933929).

The spelling of 52512404 in words is "fifty-two million, five hundred twelve thousand, four hundred four".