2557956 has 24 divisors (see below), whose sum is σ = 6320160. Its totient is φ = 802432.

The previous prime is 2557937. The next prime is 2557957. The reversal of 2557956 is 6597552.

It is not an unprimeable number, because it can be changed into a prime (2557957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6066 + ... + 6473.

It is an arithmetic number, because the mean of its divisors is an integer number (263340).

2^2557956 is an apocalyptic number.

It is an amenable number.

2557956 is an abundant number, since it is smaller than the sum of its proper divisors (3762204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2557956 is a wasteful number, since it uses less digits than its factorization.

2557956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12563 (or 12561 counting only the distinct ones).

The product of its digits is 94500, while the sum is 39.

The square root of 2557956 is about 1599.3611224486. The cubic root of 2557956 is about 136.7616578021.

The spelling of 2557956 in words is "two million, five hundred fifty-seven thousand, nine hundred fifty-six".