252896813 has 8 divisors (see below), whose sum is σ = 279711768. Its totient is φ = 227133504.

The previous prime is 252896779. The next prime is 252896843. The reversal of 252896813 is 318698252.

It can be written as a sum of positive squares in 4 ways, for example, as 111239209 + 141657604 = 10547^2 + 11902^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 252896813 - 2¹⁰ = 252895789 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252896843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 262406 + ... + 263367.

It is an arithmetic number, because the mean of its divisors is an integer number (34963971).

Almost surely, 2^252896813 is an apocalyptic number.

It is an amenable number.

252896813 is a deficient number, since it is larger than the sum of its proper divisors (26814955).

252896813 is a wasteful number, since it uses less digits than its factorization.

252896813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525823.

The product of its digits is 207360, while the sum is 44.

The square root of 252896813 is about 15902.7297342312. The cubic root of 252896813 is about 632.3843575130.

The spelling of 252896813 in words is "two hundred fifty-two million, eight hundred ninety-six thousand, eight hundred thirteen".