252111345 has 16 divisors (see below), whose sum is σ = 403762560. Its totient is φ = 134331264.

The previous prime is 252111331. The next prime is 252111397. The reversal of 252111345 is 543111252.

It is a happy number.

It is not a de Polignac number, because 252111345 - 2⁴ = 252111329 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9492 + ... + 24378.

It is an arithmetic number, because the mean of its divisors is an integer number (25235160).

Almost surely, 2^252111345 is an apocalyptic number.

It is an amenable number.

252111345 is a deficient number, since it is larger than the sum of its proper divisors (151651215).

252111345 is a wasteful number, since it uses less digits than its factorization.

252111345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16024.

The product of its digits is 1200, while the sum is 24.

The square root of 252111345 is about 15878.0145169350. The cubic root of 252111345 is about 631.7289745146.

Adding to 252111345 its reverse (543111252), we get a palindrome (795222597).

The spelling of 252111345 in words is "two hundred fifty-two million, one hundred eleven thousand, three hundred forty-five".