252778 has 8 divisors (see below), whose sum is σ = 381600. Its totient is φ = 125580.

The previous prime is 252767. The next prime is 252779. The reversal of 252778 is 877252.

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

It is a nialpdrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (252779) 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, 123 + ... + 721.

It is an arithmetic number, because the mean of its divisors is an integer number (47700).

2²⁵²⁷⁷⁸ is an apocalyptic number.

252778 is a deficient number, since it is larger than the sum of its proper divisors (128822).

252778 is a wasteful number, since it uses less digits than its factorization.

252778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812.

The product of its digits is 7840, while the sum is 31.

The square root of 252778 is about 502.7703252977. The cubic root of 252778 is about 63.2285308878.

The spelling of 252778 in words is "two hundred fifty-two thousand, seven hundred seventy-eight".