2557156 has 24 divisors (see below), whose sum is σ = 5148416. Its totient is φ = 1088640.

The previous prime is 2557127. The next prime is 2557169. The reversal of 2557156 is 6517552.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7420 + ... + 7756.

2^2557156 is an apocalyptic number.

It is an amenable number.

2557156 is an abundant number, since it is smaller than the sum of its proper divisors (2591260).

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

2557156 is a wasteful number, since it uses less digits than its factorization.

2557156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619 (or 617 counting only the distinct ones).

The product of its digits is 10500, while the sum is 31.

The square root of 2557156 is about 1599.1110030264. Note that the first 3 decimals coincide. The cubic root of 2557156 is about 136.7473989258.

The spelling of 2557156 in words is "two million, five hundred fifty-seven thousand, one hundred fifty-six".