2531489 has 2 divisors, whose sum is σ = 2531490. Its totient is φ = 2531488.

The previous prime is 2531483. The next prime is 2531519. The reversal of 2531489 is 9841352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2505889 + 25600 = 1583^2 + 160^2 .

It is a cyclic number.

It is not a de Polignac number, because 2531489 - 2⁸ = 2531233 is a prime.

It is not a weakly prime, because it can be changed into another prime (2531483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1265744 + 1265745.

It is an arithmetic number, because the mean of its divisors is an integer number (1265745).

2^2531489 is an apocalyptic number.

It is an amenable number.

2531489 is a deficient number, since it is larger than the sum of its proper divisors (1).

2531489 is an equidigital number, since it uses as much as digits as its factorization.

2531489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 32.

The square root of 2531489 is about 1591.0653663505. The cubic root of 2531489 is about 136.2883336294.

The spelling of 2531489 in words is "two million, five hundred thirty-one thousand, four hundred eighty-nine".