2558531 has 2 divisors, whose sum is σ = 2558532. Its totient is φ = 2558530.

The previous prime is 2558527. The next prime is 2558533. The reversal of 2558531 is 1358552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2558531 - 2² = 2558527 is a prime.

It is a super-2 number, since 2×2558531² = 13092161755922, which contains 22 as substring.

Together with 2558533, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2558494 and 2558503.

It is not a weakly prime, because it can be changed into another prime (2558533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1279265 + 1279266.

It is an arithmetic number, because the mean of its divisors is an integer number (1279266).

2^2558531 is an apocalyptic number.

2558531 is a deficient number, since it is larger than the sum of its proper divisors (1).

2558531 is an equidigital number, since it uses as much as digits as its factorization.

2558531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6000, while the sum is 29.

The square root of 2558531 is about 1599.5408716254. The cubic root of 2558531 is about 136.7719045331.

The spelling of 2558531 in words is "two million, five hundred fifty-eight thousand, five hundred thirty-one".