252227578 has 4 divisors (see below), whose sum is σ = 378341370. Its totient is φ = 126113788.

The previous prime is 252227491. The next prime is 252227579. The reversal of 252227578 is 875722252.

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

It can be written as a sum of positive squares in only one way, i.e., 219543489 + 32684089 = 14817^2 + 5717^2 .

It is a super-2 number, since 2×252227578² = 127237502207492168, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 252227578.

It is not an unprimeable number, because it can be changed into a prime (252227579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63056893 + ... + 63056896.

Almost surely, 2^252227578 is an apocalyptic number.

252227578 is a deficient number, since it is larger than the sum of its proper divisors (126113792).

252227578 is a wasteful number, since it uses less digits than its factorization.

252227578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126113791.

The product of its digits is 156800, while the sum is 40.

The square root of 252227578 is about 15881.6742820145. The cubic root of 252227578 is about 631.8260433613.

The spelling of 252227578 in words is "two hundred fifty-two million, two hundred twenty-seven thousand, five hundred seventy-eight".