252786263 has 4 divisors (see below), whose sum is σ = 254069640. Its totient is φ = 251502888.

The previous prime is 252786253. The next prime is 252786269. The reversal of 252786263 is 362687252.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252786263 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 252786263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252786269) 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, 641393 + ... + 641786.

It is an arithmetic number, because the mean of its divisors is an integer number (63517410).

Almost surely, 2^252786263 is an apocalyptic number.

252786263 is a deficient number, since it is larger than the sum of its proper divisors (1283377).

252786263 is a wasteful number, since it uses less digits than its factorization.

252786263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1283376.

The product of its digits is 241920, while the sum is 41.

The square root of 252786263 is about 15899.2535359368. The cubic root of 252786263 is about 632.2921983446.

The spelling of 252786263 in words is "two hundred fifty-two million, seven hundred eighty-six thousand, two hundred sixty-three".