253275565 has 4 divisors (see below), whose sum is σ = 303930684. Its totient is φ = 202620448.

The previous prime is 253275559. The next prime is 253275569. The reversal of 253275565 is 565572352.

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 140873161 + 112402404 = 11869^2 + 10602^2 .

It is a cyclic number.

It is not a de Polignac number, because 253275565 - 2³ = 253275557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253275569) 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, 25327552 + ... + 25327561.

It is an arithmetic number, because the mean of its divisors is an integer number (75982671).

Almost surely, 2^253275565 is an apocalyptic number.

It is an amenable number.

253275565 is a deficient number, since it is larger than the sum of its proper divisors (50655119).

253275565 is an equidigital number, since it uses as much as digits as its factorization.

253275565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50655118.

The product of its digits is 315000, while the sum is 40.

The square root of 253275565 is about 15914.6336747033. The cubic root of 253275565 is about 632.6998977599.

The spelling of 253275565 in words is "two hundred fifty-three million, two hundred seventy-five thousand, five hundred sixty-five".