13583945 has 4 divisors (see below), whose sum is σ = 16300740. Its totient is φ = 10867152.

The previous prime is 13583903. The next prime is 13583951. The reversal of 13583945 is 54938531.

It is a happy number.

13583945 is digitally balanced in base 2, 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.

It can be written as a sum of positive squares in 2 ways, for example, as 2105401 + 11478544 = 1451^2 + 3388^2 .

It is a cyclic number.

It is not a de Polignac number, because 13583945 - 2⁶ = 13583881 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13583899 and 13583908.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1358390 + ... + 1358399.

It is an arithmetic number, because the mean of its divisors is an integer number (4075185).

Almost surely, 2^13583945 is an apocalyptic number.

It is an amenable number.

13583945 is a deficient number, since it is larger than the sum of its proper divisors (2716795).

13583945 is an equidigital number, since it uses as much as digits as its factorization.

13583945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2716794.

The product of its digits is 64800, while the sum is 38.

The square root of 13583945 is about 3685.6403785502. The cubic root of 13583945 is about 238.6026731027.

The spelling of 13583945 in words is "thirteen million, five hundred eighty-three thousand, nine hundred forty-five".