8530531 has 2 divisors, whose sum is σ = 8530532. Its totient is φ = 8530530.

The previous prime is 8530523. The next prime is 8530537. The reversal of 8530531 is 1350358.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8530531 - 2³ = 8530523 is a prime.

It is a super-2 number, since 2×8530531² = 145539918283922, which contains 22 as substring.

8530531 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 8530496 and 8530505.

It is not a weakly prime, because it can be changed into another prime (8530537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4265265 + 4265266.

It is an arithmetic number, because the mean of its divisors is an integer number (4265266).

Almost surely, 2^8530531 is an apocalyptic number.

8530531 is a deficient number, since it is larger than the sum of its proper divisors (1).

8530531 is an equidigital number, since it uses as much as digits as its factorization.

8530531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 8530531 is about 2920.7072773559. The cubic root of 8530531 is about 204.3268102051.

Adding to 8530531 its reverse (1350358), we get a palindrome (9880889).

The spelling of 8530531 in words is "eight million, five hundred thirty thousand, five hundred thirty-one".