253645573 has 4 divisors (see below), whose sum is σ = 266995360. Its totient is φ = 240295788.

The previous prime is 253645547. The next prime is 253645597. The reversal of 253645573 is 375546352.

253645573 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is not a de Polignac number, because 253645573 - 2⁹ = 253645061 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 (253645523) 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, 6674865 + ... + 6674902.

It is an arithmetic number, because the mean of its divisors is an integer number (66748840).

Almost surely, 2^253645573 is an apocalyptic number.

It is an amenable number.

253645573 is a deficient number, since it is larger than the sum of its proper divisors (13349787).

253645573 is a wasteful number, since it uses less digits than its factorization.

253645573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13349786.

The product of its digits is 378000, while the sum is 40.

The square root of 253645573 is about 15926.2542049284. The cubic root of 253645573 is about 633.0078497147.

The spelling of 253645573 in words is "two hundred fifty-three million, six hundred forty-five thousand, five hundred seventy-three".