2564269 has 4 divisors (see below), whose sum is σ = 2569696. Its totient is φ = 2558844.

The previous prime is 2564251. The next prime is 2564279. The reversal of 2564269 is 9624652.

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 2564269 - 2¹⁹ = 2039981 is a prime.

It is a super-2 number, since 2×2564269² = 13150951008722, 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 (2564249) 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, 1929 + ... + 2974.

It is an arithmetic number, because the mean of its divisors is an integer number (642424).

2^2564269 is an apocalyptic number.

It is an amenable number.

2564269 is a deficient number, since it is larger than the sum of its proper divisors (5427).

2564269 is an equidigital number, since it uses as much as digits as its factorization.

2564269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5426.

The product of its digits is 25920, while the sum is 34.

The square root of 2564269 is about 1601.3335067999. Note that the first 3 decimals coincide. The cubic root of 2564269 is about 136.8740739983.

The spelling of 2564269 in words is "two million, five hundred sixty-four thousand, two hundred sixty-nine".