253855669 has 4 divisors (see below), whose sum is σ = 264892896. Its totient is φ = 242818444.

The previous prime is 253855649. The next prime is 253855691. The reversal of 253855669 is 966558352.

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 253855669 - 2⁹ = 253855157 is a prime.

It is a super-2 number, since 2×253855669² = 128885401366875122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253855619) 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, 5518579 + ... + 5518624.

It is an arithmetic number, because the mean of its divisors is an integer number (66223224).

Almost surely, 2^253855669 is an apocalyptic number.

It is an amenable number.

253855669 is a deficient number, since it is larger than the sum of its proper divisors (11037227).

253855669 is a wasteful number, since it uses less digits than its factorization.

253855669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11037226.

The product of its digits is 1944000, while the sum is 49.

The square root of 253855669 is about 15932.8487408875. The cubic root of 253855669 is about 633.1825760898.

The spelling of 253855669 in words is "two hundred fifty-three million, eight hundred fifty-five thousand, six hundred sixty-nine".