253580865 has 32 divisors (see below), whose sum is σ = 426297600. Its totient is φ = 128468736.

The previous prime is 253580849. The next prime is 253580867. The reversal of 253580865 is 568085352.

253580865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 253580865 - 2⁴ = 253580849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (253580867) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48939 + ... + 53871.

It is an arithmetic number, because the mean of its divisors is an integer number (13321800).

Almost surely, 2^253580865 is an apocalyptic number.

It is an amenable number.

253580865 is a deficient number, since it is larger than the sum of its proper divisors (172716735).

253580865 is a wasteful number, since it uses less digits than its factorization.

253580865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5113.

The product of its (nonzero) digits is 288000, while the sum is 42.

The square root of 253580865 is about 15924.2225869899. Note that the first 3 decimals coincide. The cubic root of 253580865 is about 632.9540158615.

The spelling of 253580865 in words is "two hundred fifty-three million, five hundred eighty thousand, eight hundred sixty-five".