2523181 has 12 divisors (see below), whose sum is σ = 2756800. Its totient is φ = 2302560.

The previous prime is 2523173. The next prime is 2523187. The reversal of 2523181 is 1813252.

It is not a de Polignac number, because 2523181 - 2³ = 2523173 is a prime.

It is a super-2 number, since 2×2523181² = 12732884717522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2523187) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31900 + ... + 31978.

2^2523181 is an apocalyptic number.

It is an amenable number.

2523181 is a deficient number, since it is larger than the sum of its proper divisors (233619).

2523181 is an equidigital number, since it uses as much as digits as its factorization.

2523181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180 (or 139 counting only the distinct ones).

The product of its digits is 480, while the sum is 22.

The square root of 2523181 is about 1588.4523914805. The cubic root of 2523181 is about 136.1390770185.

It can be divided in two parts, 2523 and 181, that added together give a square (2704 = 52²).

The spelling of 2523181 in words is "two million, five hundred twenty-three thousand, one hundred eighty-one".