2567531 has 2 divisors, whose sum is σ = 2567532. Its totient is φ = 2567530.

The previous prime is 2567519. The next prime is 2567533. The reversal of 2567531 is 1357652.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2567531 is a prime.

It is a super-2 number, since 2×2567531² = 13184430871922, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 2567533, 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 = 2567494 and 2567503.

It is not a weakly prime, because it can be changed into another prime (2567533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1283765 + 1283766.

It is an arithmetic number, because the mean of its divisors is an integer number (1283766).

2^2567531 is an apocalyptic number.

2567531 is a deficient number, since it is larger than the sum of its proper divisors (1).

2567531 is an equidigital number, since it uses as much as digits as its factorization.

2567531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6300, while the sum is 29.

The square root of 2567531 is about 1602.3517092074. The cubic root of 2567531 is about 136.9320884577.

The spelling of 2567531 in words is "two million, five hundred sixty-seven thousand, five hundred thirty-one".