8249531 has 2 divisors, whose sum is σ = 8249532. Its totient is φ = 8249530.

The previous prime is 8249519. The next prime is 8249533. The reversal of 8249531 is 1359428.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8249531 - 2¹⁰ = 8248507 is a prime.

It is a super-2 number, since 2×8249531² = 136109523439922, which contains 22 as substring.

Together with 8249533, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8249533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4124765 + 4124766.

It is an arithmetic number, because the mean of its divisors is an integer number (4124766).

Almost surely, 2^8249531 is an apocalyptic number.

8249531 is a deficient number, since it is larger than the sum of its proper divisors (1).

8249531 is an equidigital number, since it uses as much as digits as its factorization.

8249531 is an odious number, because the sum of its binary digits is odd.

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

The square root of 8249531 is about 2872.1996796880. The cubic root of 8249531 is about 202.0581719857.

The spelling of 8249531 in words is "eight million, two hundred forty-nine thousand, five hundred thirty-one".