13558023 has 20 divisors (see below), whose sum is σ = 20603880. Its totient is φ = 8882352.

The previous prime is 13558009. The next prime is 13558033. The reversal of 13558023 is 32085531.

13558023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13558023 - 2⁵ = 13557991 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13558033) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3361 + ... + 6197.

It is an arithmetic number, because the mean of its divisors is an integer number (1030194).

Almost surely, 2^13558023 is an apocalyptic number.

13558023 is a deficient number, since it is larger than the sum of its proper divisors (7045857).

13558023 is an equidigital number, since it uses as much as digits as its factorization.

13558023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2908 (or 2899 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 13558023 is about 3682.1220783673. The cubic root of 13558023 is about 238.4508027158.

The spelling of 13558023 in words is "thirteen million, five hundred fifty-eight thousand, twenty-three".