10530209 has 4 divisors (see below), whose sum is σ = 10754304. Its totient is φ = 10306116.

The previous prime is 10530197. The next prime is 10530211. The reversal of 10530209 is 90203501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10530209 is a prime.

It is a super-2 number, since 2×10530209² = 221770603167362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10530229) 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, 111977 + ... + 112070.

It is an arithmetic number, because the mean of its divisors is an integer number (2688576).

Almost surely, 2^10530209 is an apocalyptic number.

It is an amenable number.

10530209 is a deficient number, since it is larger than the sum of its proper divisors (224095).

10530209 is an equidigital number, since it uses as much as digits as its factorization.

10530209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224094.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 10530209 is about 3245.0283511859. The cubic root of 10530209 is about 219.1857573396.

The spelling of 10530209 in words is "ten million, five hundred thirty thousand, two hundred nine".