2563156 has 12 divisors (see below), whose sum is σ = 4595220. Its totient is φ = 1250240.

The previous prime is 2563153. The next prime is 2563181. The reversal of 2563156 is 6513652.

It can be written as a sum of positive squares in 2 ways, for example, as 1522756 + 1040400 = 1234^2 + 1020^2 .

It is a d-powerful number, because it can be written as 2⁵ + 5⁷ + 6³ + 3¹² + 1 + 5⁹ + 6³ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2563151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7651 + ... + 7978.

It is an arithmetic number, because the mean of its divisors is an integer number (382935).

2^2563156 is an apocalyptic number.

It is an amenable number.

2563156 is a deficient number, since it is larger than the sum of its proper divisors (2032064).

2563156 is a wasteful number, since it uses less digits than its factorization.

2563156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15674 (or 15672 counting only the distinct ones).

The product of its digits is 5400, while the sum is 28.

The square root of 2563156 is about 1600.9859462219. The cubic root of 2563156 is about 136.8542681082.

The spelling of 2563156 in words is "two million, five hundred sixty-three thousand, one hundred fifty-six".