13522539 has 8 divisors (see below), whose sum is σ = 18088912. Its totient is φ = 8985600.

The previous prime is 13522499. The next prime is 13522549. The reversal of 13522539 is 93522531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13522539 - 2⁹ = 13522027 is a prime.

It is a super-2 number, since 2×13522539² = 365718122013042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13522549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6262 + ... + 8139.

It is an arithmetic number, because the mean of its divisors is an integer number (2261114).

Almost surely, 2^13522539 is an apocalyptic number.

13522539 is a deficient number, since it is larger than the sum of its proper divisors (4566373).

13522539 is a wasteful number, since it uses less digits than its factorization.

13522539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14717.

The product of its digits is 8100, while the sum is 30.

The square root of 13522539 is about 3677.3005044462. The cubic root of 13522539 is about 238.2425968300.

The spelling of 13522539 in words is "thirteen million, five hundred twenty-two thousand, five hundred thirty-nine".