10535209 has 4 divisors (see below), whose sum is σ = 10639620. Its totient is φ = 10430800.

The previous prime is 10535183. The next prime is 10535251. The reversal of 10535209 is 90253501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90253501 = 13 ⋅6942577.

It can be written as a sum of positive squares in 2 ways, for example, as 10208025 + 327184 = 3195^2 + 572^2 .

It is a cyclic number.

It is not a de Polignac number, because 10535209 - 2⁹ = 10534697 is a prime.

It is a super-2 number, since 2×10535209² = 221981257347362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10535279) 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, 52054 + ... + 52255.

It is an arithmetic number, because the mean of its divisors is an integer number (2659905).

Almost surely, 2^10535209 is an apocalyptic number.

It is an amenable number.

10535209 is a deficient number, since it is larger than the sum of its proper divisors (104411).

10535209 is a wasteful number, since it uses less digits than its factorization.

10535209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104410.

The product of its (nonzero) digits is 1350, while the sum is 25.

The square root of 10535209 is about 3245.7986690490. The cubic root of 10535209 is about 219.2204434309.

The spelling of 10535209 in words is "ten million, five hundred thirty-five thousand, two hundred nine".