252523778 has 16 divisors (see below), whose sum is σ = 417411456. Its totient is φ = 113838480.

The previous prime is 252523759. The next prime is 252523807. The reversal of 252523778 is 877325252.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111818 + ... + 114053.

It is an arithmetic number, because the mean of its divisors is an integer number (26088216).

Almost surely, 2^252523778 is an apocalyptic number.

252523778 is a deficient number, since it is larger than the sum of its proper divisors (164887678).

252523778 is a wasteful number, since it uses less digits than its factorization.

252523778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225929.

The product of its digits is 235200, while the sum is 41.

The square root of 252523778 is about 15890.9967591715. The cubic root of 252523778 is about 632.0732720287.

The spelling of 252523778 in words is "two hundred fifty-two million, five hundred twenty-three thousand, seven hundred seventy-eight".