253220266 has 8 divisors (see below), whose sum is σ = 409048164. Its totient is φ = 116870880.

The previous prime is 253220237. The next prime is 253220299. The reversal of 253220266 is 662022352.

It can be written as a sum of positive squares in 2 ways, for example, as 234549225 + 18671041 = 15315^2 + 4321^2 .

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

It is a super-2 number, since 2×253220266² = 128241006226221512, which contains 22 as substring.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 4869595 + ... + 4869646.

Almost surely, 2^253220266 is an apocalyptic number.

253220266 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

253220266 is a deficient number, since it is larger than the sum of its proper divisors (155827898).

253220266 is a wasteful number, since it uses less digits than its factorization.

253220266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9739256.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 253220266 is about 15912.8962165911. The cubic root of 253220266 is about 632.6538474980.

The spelling of 253220266 in words is "two hundred fifty-three million, two hundred twenty thousand, two hundred sixty-six".