10505531 has 2 divisors, whose sum is σ = 10505532. Its totient is φ = 10505530.

The previous prime is 10505527. The next prime is 10505563. The reversal of 10505531 is 13550501.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (13550501) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10505531 - 2² = 10505527 is a prime.

It is a super-2 number, since 2×10505531² = 220732363183922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (10505731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5252765 + 5252766.

It is an arithmetic number, because the mean of its divisors is an integer number (5252766).

Almost surely, 2^10505531 is an apocalyptic number.

10505531 is a deficient number, since it is larger than the sum of its proper divisors (1).

10505531 is an equidigital number, since it uses as much as digits as its factorization.

10505531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 375, while the sum is 20.

The square root of 10505531 is about 3241.2236886707. The cubic root of 10505531 is about 219.0143996425.

The spelling of 10505531 in words is "ten million, five hundred five thousand, five hundred thirty-one".