13522861 has 4 divisors (see below), whose sum is σ = 14752224. Its totient is φ = 12293500.

The previous prime is 13522853. The next prime is 13522877. The reversal of 13522861 is 16822531.

13522861 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 13522861 - 2³ = 13522853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13522801) 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, 614665 + ... + 614686.

It is an arithmetic number, because the mean of its divisors is an integer number (3688056).

Almost surely, 2^13522861 is an apocalyptic number.

13522861 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13522861 is a deficient number, since it is larger than the sum of its proper divisors (1229363).

13522861 is a wasteful number, since it uses less digits than its factorization.

13522861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1229362.

The product of its digits is 2880, while the sum is 28.

The square root of 13522861 is about 3677.3442863023. The cubic root of 13522861 is about 238.2444878336.

The spelling of 13522861 in words is "thirteen million, five hundred twenty-two thousand, eight hundred sixty-one".