2556097 has 4 divisors (see below), whose sum is σ = 2566080. Its totient is φ = 2546116.

The previous prime is 2556091. The next prime is 2556101. The reversal of 2556097 is 7906552.

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 2556097 - 2¹¹ = 2554049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2556091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4597 + ... + 5122.

It is an arithmetic number, because the mean of its divisors is an integer number (641520).

2^2556097 is an apocalyptic number.

It is an amenable number.

2556097 is a deficient number, since it is larger than the sum of its proper divisors (9983).

2556097 is an equidigital number, since it uses as much as digits as its factorization.

2556097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9982.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 2556097 is about 1598.7798472585. The cubic root of 2556097 is about 136.7285191637.

The spelling of 2556097 in words is "two million, five hundred fifty-six thousand, ninety-seven".