252761045 has 4 divisors (see below), whose sum is σ = 303313260. Its totient is φ = 202208832.

The previous prime is 252760997. The next prime is 252761057. The reversal of 252761045 is 540167252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 89151364 + 163609681 = 9442^2 + 12791^2 .

It is a cyclic number.

It is not a de Polignac number, because 252761045 - 2²⁰ = 251712469 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25276100 + ... + 25276109.

It is an arithmetic number, because the mean of its divisors is an integer number (75828315).

Almost surely, 2^252761045 is an apocalyptic number.

It is an amenable number.

252761045 is a deficient number, since it is larger than the sum of its proper divisors (50552215).

252761045 is an equidigital number, since it uses as much as digits as its factorization.

252761045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50552214.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 252761045 is about 15898.4604600571. The cubic root of 252761045 is about 632.2711717868.

The spelling of 252761045 in words is "two hundred fifty-two million, seven hundred sixty-one thousand, forty-five".