2556541 has 4 divisors (see below), whose sum is σ = 2753212. Its totient is φ = 2359872.

The previous prime is 2556523. The next prime is 2556559. The reversal of 2556541 is 1456552.

2556541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (2556523) and next prime (2556559).

It can be written as a sum of positive squares in 2 ways, for example, as 1313316 + 1243225 = 1146^2 + 1115^2 .

It is a cyclic number.

It is not a de Polignac number, because 2556541 - 2⁵ = 2556509 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 (2556041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98316 + ... + 98341.

It is an arithmetic number, because the mean of its divisors is an integer number (688303).

2^2556541 is an apocalyptic number.

It is an amenable number.

2556541 is a deficient number, since it is larger than the sum of its proper divisors (196671).

2556541 is a wasteful number, since it uses less digits than its factorization.

2556541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196670.

The product of its digits is 6000, while the sum is 28.

The square root of 2556541 is about 1598.9186971200. The cubic root of 2556541 is about 136.7364353927.

The spelling of 2556541 in words is "two million, five hundred fifty-six thousand, five hundred forty-one".