2556383 has 4 divisors (see below), whose sum is σ = 2576640. Its totient is φ = 2536128.

The previous prime is 2556373. The next prime is 2556397. The reversal of 2556383 is 3836552.

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 2556383 - 2¹⁶ = 2490847 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 (2556373) 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, 9938 + ... + 10191.

It is an arithmetic number, because the mean of its divisors is an integer number (644160).

2^2556383 is an apocalyptic number.

2556383 is a deficient number, since it is larger than the sum of its proper divisors (20257).

2556383 is a wasteful number, since it uses less digits than its factorization.

2556383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20256.

The product of its digits is 21600, while the sum is 32.

The square root of 2556383 is about 1598.8692879657. The cubic root of 2556383 is about 136.7336184613.

The spelling of 2556383 in words is "two million, five hundred fifty-six thousand, three hundred eighty-three".