252778259 has 8 divisors (see below), whose sum is σ = 253992672. Its totient is φ = 251567680.

The previous prime is 252778249. The next prime is 252778271. The reversal of 252778259 is 952877252.

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

It is a cyclic number.

It is not a de Polignac number, because 252778259 - 2¹⁶ = 252712723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252778249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 339842 + ... + 340584.

It is an arithmetic number, because the mean of its divisors is an integer number (31749084).

Almost surely, 2^252778259 is an apocalyptic number.

252778259 is a deficient number, since it is larger than the sum of its proper divisors (1214413).

252778259 is an equidigital number, since it uses as much as digits as its factorization.

252778259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1917.

The product of its digits is 705600, while the sum is 47.

The square root of 252778259 is about 15899.0018240140. The cubic root of 252778259 is about 632.2855248278.

The spelling of 252778259 in words is "two hundred fifty-two million, seven hundred seventy-eight thousand, two hundred fifty-nine".