2556057 has 16 divisors (see below), whose sum is σ = 3962880. Its totient is φ = 1435152.

The previous prime is 2556041. The next prime is 2556061. The reversal of 2556057 is 7506552.

It is not a de Polignac number, because 2556057 - 2⁴ = 2556041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2556067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 208 + ... + 2270.

It is an arithmetic number, because the mean of its divisors is an integer number (247680).

2^2556057 is an apocalyptic number.

It is an amenable number.

2556057 is a deficient number, since it is larger than the sum of its proper divisors (1406823).

2556057 is a wasteful number, since it uses less digits than its factorization.

2556057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2132.

The product of its (nonzero) digits is 10500, while the sum is 30.

The square root of 2556057 is about 1598.7673376699. The cubic root of 2556057 is about 136.7278059449.

The spelling of 2556057 in words is "two million, five hundred fifty-six thousand, fifty-seven".