10006531 has 4 divisors (see below), whose sum is σ = 10044000. Its totient is φ = 9969064.

The previous prime is 10006519. The next prime is 10006547. The reversal of 10006531 is 13560001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10006531 - 2⁵ = 10006499 is a prime.

It is a super-2 number, since 2×10006531² = 200261325307922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10006511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18331 + ... + 18868.

It is an arithmetic number, because the mean of its divisors is an integer number (2511000).

Almost surely, 2^10006531 is an apocalyptic number.

10006531 is a deficient number, since it is larger than the sum of its proper divisors (37469).

10006531 is an equidigital number, since it uses as much as digits as its factorization.

10006531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37468.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 10006531 is about 3163.3101333888. The cubic root of 10006531 is about 215.4903608395.

Adding to 10006531 its reverse (13560001), we get a palindrome (23566532).

The spelling of 10006531 in words is "ten million, six thousand, five hundred thirty-one".