252288545 has 8 divisors (see below), whose sum is σ = 313185960. Its totient is φ = 194871040.

The previous prime is 252288503. The next prime is 252288563. The reversal of 252288545 is 545882252.

It can be written as a sum of positive squares in 4 ways, for example, as 60715264 + 191573281 = 7792^2 + 13841^2 .

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

It is not a de Polignac number, because 252288545 - 2¹² = 252284449 is a prime.

It is an unprimeable number.

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, 869816 + ... + 870105.

It is an arithmetic number, because the mean of its divisors is an integer number (39148245).

Almost surely, 2^252288545 is an apocalyptic number.

It is an amenable number.

252288545 is a deficient number, since it is larger than the sum of its proper divisors (60897415).

252288545 is a wasteful number, since it uses less digits than its factorization.

252288545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1739955.

The product of its digits is 256000, while the sum is 41.

The square root of 252288545 is about 15883.5935795399. The cubic root of 252288545 is about 631.8769463797.

The spelling of 252288545 in words is "two hundred fifty-two million, two hundred eighty-eight thousand, five hundred forty-five".