13558 has 4 divisors (see below), whose sum is σ = 20340. Its totient is φ = 6778.

The previous prime is 13553. The next prime is 13567. The reversal of 13558 is 85531.

It is a semiprime because it is the product of two primes.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3388 + ... + 3391.

It is an arithmetic number, because the mean of its divisors is an integer number (5085).

2¹³⁵⁵⁸ is an apocalyptic number.

13558 is a deficient number, since it is larger than the sum of its proper divisors (6782).

13558 is an equidigital number, since it uses as much as digits as its factorization.

13558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6781.

The product of its digits is 600, while the sum is 22.

The square root of 13558 is about 116.4388251401. The cubic root of 13558 is about 23.8450667879.

The spelling of 13558 in words is "thirteen thousand, five hundred fifty-eight".