253569 has 4 divisors (see below), whose sum is σ = 338096. Its totient is φ = 169044.

The previous prime is 253567. The next prime is 253573. The reversal of 253569 is 965352.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 253569 - 2¹ = 253567 is a prime.

It is a super-2 number, since 2×253569² = 128594475522, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (253567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42259 + ... + 42264.

It is an arithmetic number, because the mean of its divisors is an integer number (84524).

2²⁵³⁵⁶⁹ is an apocalyptic number.

It is an amenable number.

253569 is a deficient number, since it is larger than the sum of its proper divisors (84527).

253569 is an equidigital number, since it uses as much as digits as its factorization.

253569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84526.

The product of its digits is 8100, while the sum is 30.

The square root of 253569 is about 503.5563523579. The cubic root of 253569 is about 63.2944143775.

The spelling of 253569 in words is "two hundred fifty-three thousand, five hundred sixty-nine".