252111693 has 4 divisors (see below), whose sum is σ = 336148928. Its totient is φ = 168074460.

The previous prime is 252111677. The next prime is 252111697. The reversal of 252111693 is 396111252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 252111693 - 2⁴ = 252111677 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 252111693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252111697) 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, 42018613 + ... + 42018618.

It is an arithmetic number, because the mean of its divisors is an integer number (84037232).

Almost surely, 2^252111693 is an apocalyptic number.

It is an amenable number.

252111693 is a deficient number, since it is larger than the sum of its proper divisors (84037235).

252111693 is an equidigital number, since it uses as much as digits as its factorization.

252111693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84037234.

The product of its digits is 3240, while the sum is 30.

The square root of 252111693 is about 15878.0254754803. The cubic root of 252111693 is about 631.7292651819.

The spelling of 252111693 in words is "two hundred fifty-two million, one hundred eleven thousand, six hundred ninety-three".