8542531 has 2 divisors, whose sum is σ = 8542532. Its totient is φ = 8542530.

The previous prime is 8542529. The next prime is 8542537. The reversal of 8542531 is 1352458.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8542531 - 2¹ = 8542529 is a prime.

It is a super-2 number, since 2×8542531² = 145949671771922, which contains 22 as substring.

Together with 8542529, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 8542531.

It is not a weakly prime, because it can be changed into another prime (8542537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4271265 + 4271266.

It is an arithmetic number, because the mean of its divisors is an integer number (4271266).

Almost surely, 2^8542531 is an apocalyptic number.

8542531 is a deficient number, since it is larger than the sum of its proper divisors (1).

8542531 is an equidigital number, since it uses as much as digits as its factorization.

8542531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4800, while the sum is 28.

The square root of 8542531 is about 2922.7608523449. The cubic root of 8542531 is about 204.4225749707.

Adding to 8542531 its reverse (1352458), we get a palindrome (9894989).

The spelling of 8542531 in words is "eight million, five hundred forty-two thousand, five hundred thirty-one".