252345505 has 4 divisors (see below), whose sum is σ = 302814612. Its totient is φ = 201876400.

The previous prime is 252345503. The next prime is 252345539. The reversal of 252345505 is 505543252.

It is a happy number.

252345505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 52519009 + 199826496 = 7247^2 + 14136^2 .

It is not a de Polignac number, because 252345505 - 2¹ = 252345503 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252345503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25234546 + ... + 25234555.

It is an arithmetic number, because the mean of its divisors is an integer number (75703653).

Almost surely, 2^252345505 is an apocalyptic number.

It is an amenable number.

252345505 is a deficient number, since it is larger than the sum of its proper divisors (50469107).

252345505 is an equidigital number, since it uses as much as digits as its factorization.

252345505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50469106.

The product of its (nonzero) digits is 30000, while the sum is 31.

The square root of 252345505 is about 15885.3865234687. The cubic root of 252345505 is about 631.9244964346.

Adding to 252345505 its reverse (505543252), we get a palindrome (757888757).

The spelling of 252345505 in words is "two hundred fifty-two million, three hundred forty-five thousand, five hundred five".