6917531 has 2 divisors, whose sum is σ = 6917532. Its totient is φ = 6917530.

The previous prime is 6917513. The next prime is 6917543. The reversal of 6917531 is 1357196.

Together with previous prime (6917513) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6917531 is a prime.

It is a super-2 number, since 2×6917531² = 95704470271922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6917551) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3458765 + 3458766.

It is an arithmetic number, because the mean of its divisors is an integer number (3458766).

Almost surely, 2^6917531 is an apocalyptic number.

6917531 is a deficient number, since it is larger than the sum of its proper divisors (1).

6917531 is an equidigital number, since it uses as much as digits as its factorization.

6917531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5670, while the sum is 32.

The square root of 6917531 is about 2630.1199592414. The cubic root of 6917531 is about 190.5389223841.

The spelling of 6917531 in words is "six million, nine hundred seventeen thousand, five hundred thirty-one".