2556427 has 4 divisors (see below), whose sum is σ = 2667600. Its totient is φ = 2445256.

The previous prime is 2556419. The next prime is 2556451. The reversal of 2556427 is 7246552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2556427 - 2³ = 2556419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2556457) 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, 55552 + ... + 55597.

It is an arithmetic number, because the mean of its divisors is an integer number (666900).

2^2556427 is an apocalyptic number.

2556427 is a deficient number, since it is larger than the sum of its proper divisors (111173).

2556427 is a wasteful number, since it uses less digits than its factorization.

2556427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111172.

The product of its digits is 16800, while the sum is 31.

The square root of 2556427 is about 1598.8830476304. The cubic root of 2556427 is about 136.7344029349.

The spelling of 2556427 in words is "two million, five hundred fifty-six thousand, four hundred twenty-seven".