252785923 has 4 divisors (see below), whose sum is σ = 272231008. Its totient is φ = 233340840.

The previous prime is 252785839. The next prime is 252785927. The reversal of 252785923 is 329587252.

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

It is a cyclic number.

It is not a de Polignac number, because 252785923 - 2¹⁷ = 252654851 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 252785923.

It is not an unprimeable number, because it can be changed into a prime (252785927) 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, 9722523 + ... + 9722548.

It is an arithmetic number, because the mean of its divisors is an integer number (68057752).

Almost surely, 2^252785923 is an apocalyptic number.

252785923 is a deficient number, since it is larger than the sum of its proper divisors (19445085).

252785923 is a wasteful number, since it uses less digits than its factorization.

252785923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19445084.

The product of its digits is 302400, while the sum is 43.

The square root of 252785923 is about 15899.2428436074. The cubic root of 252785923 is about 632.2919148648.

The spelling of 252785923 in words is "two hundred fifty-two million, seven hundred eighty-five thousand, nine hundred twenty-three".