2556269 has 4 divisors (see below), whose sum is σ = 2571744. Its totient is φ = 2540796.

The previous prime is 2556259. The next prime is 2556277. The reversal of 2556269 is 9626552.

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 a de Polignac number, because none of the positive numbers 2^k-2556269 is a prime.

It is a super-2 number, since 2×2556269² = 13069022400722, 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 (2556259) 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, 7487 + ... + 7820.

It is an arithmetic number, because the mean of its divisors is an integer number (642936).

2^2556269 is an apocalyptic number.

It is an amenable number.

2556269 is a deficient number, since it is larger than the sum of its proper divisors (15475).

2556269 is a wasteful number, since it uses less digits than its factorization.

2556269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15474.

The product of its digits is 32400, while the sum is 35.

The square root of 2556269 is about 1598.8336373744. The cubic root of 2556269 is about 136.7315859198.

The spelling of 2556269 in words is "two million, five hundred fifty-six thousand, two hundred sixty-nine".