10531009 has 2 divisors, whose sum is σ = 10531010. Its totient is φ = 10531008.

The previous prime is 10530991. The next prime is 10531013. The reversal of 10531009 is 90013501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10112400 + 418609 = 3180^2 + 647^2 .

It is a cyclic number.

It is not a de Polignac number, because 10531009 - 2¹¹ = 10528961 is a prime.

It is a super-2 number, since 2×10531009² = 221804301116162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10531039) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5265504 + 5265505.

It is an arithmetic number, because the mean of its divisors is an integer number (5265505).

Almost surely, 2^10531009 is an apocalyptic number.

It is an amenable number.

10531009 is a deficient number, since it is larger than the sum of its proper divisors (1).

10531009 is an equidigital number, since it uses as much as digits as its factorization.

10531009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 135, while the sum is 19.

The square root of 10531009 is about 3245.1516143318. The cubic root of 10531009 is about 219.1913078519.

The spelling of 10531009 in words is "ten million, five hundred thirty-one thousand, nine".