252819045 has 12 divisors (see below), whose sum is σ = 438219756. Its totient is φ = 134836800.

The previous prime is 252819041. The next prime is 252819067. The reversal of 252819045 is 540918252.

252819045 is a `hidden beast` number, since 2 + 528 + 1 + 90 + 45 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 97891236 + 154927809 = 9894^2 + 12447^2 .

It is not a de Polignac number, because 252819045 - 2² = 252819041 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252819041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2809056 + ... + 2809145.

It is an arithmetic number, because the mean of its divisors is an integer number (36518313).

Almost surely, 2^252819045 is an apocalyptic number.

It is an amenable number.

252819045 is a deficient number, since it is larger than the sum of its proper divisors (185400711).

252819045 is a wasteful number, since it uses less digits than its factorization.

252819045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5618212 (or 5618209 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 252819045 is about 15900.2844314182. The cubic root of 252819045 is about 632.3195296121.

The spelling of 252819045 in words is "two hundred fifty-two million, eight hundred nineteen thousand, forty-five".