13522869 has 10 divisors (see below), whose sum is σ = 20200950. Its totient is φ = 9015192.

The previous prime is 13522853. The next prime is 13522877. The reversal of 13522869 is 96822531.

It can be written as a sum of positive squares in only one way, i.e., 11819844 + 1703025 = 3438^2 + 1305^2 .

It is not a de Polignac number, because 13522869 - 2⁴ = 13522853 is a prime.

It is a super-2 number, since 2×13522869² = 365735971982322, which contains 22 as substring.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13522819) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 83394 + ... + 83555.

It is an arithmetic number, because the mean of its divisors is an integer number (2020095).

Almost surely, 2^13522869 is an apocalyptic number.

It is an amenable number.

13522869 is a deficient number, since it is larger than the sum of its proper divisors (6678081).

13522869 is an equidigital number, since it uses as much as digits as its factorization.

13522869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166961 (or 166952 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 13522869 is about 3677.3453740436. The cubic root of 13522869 is about 238.2445348146.

The spelling of 13522869 in words is "thirteen million, five hundred twenty-two thousand, eight hundred sixty-nine".