2531189 has 2 divisors, whose sum is σ = 2531190. Its totient is φ = 2531188.

The previous prime is 2531183. The next prime is 2531197. The reversal of 2531189 is 9811352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1464100 + 1067089 = 1210^2 + 1033^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2531189 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2531183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1265594 + 1265595.

It is an arithmetic number, because the mean of its divisors is an integer number (1265595).

2^2531189 is an apocalyptic number.

It is an amenable number.

2531189 is a deficient number, since it is larger than the sum of its proper divisors (1).

2531189 is an equidigital number, since it uses as much as digits as its factorization.

2531189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 29.

The square root of 2531189 is about 1590.9710871037. The cubic root of 2531189 is about 136.2829496945.

The spelling of 2531189 in words is "two million, five hundred thirty-one thousand, one hundred eighty-nine".