13085558 has 4 divisors (see below), whose sum is σ = 19628340. Its totient is φ = 6542778.

The previous prime is 13085557. The next prime is 13085561. The reversal of 13085558 is 85558031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 85558031 = 13 ⋅6581387.

It is a super-3 number, since 3×13085558³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13085557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3271388 + ... + 3271391.

It is an arithmetic number, because the mean of its divisors is an integer number (4907085).

Almost surely, 2^13085558 is an apocalyptic number.

13085558 is a deficient number, since it is larger than the sum of its proper divisors (6542782).

13085558 is an equidigital number, since it uses as much as digits as its factorization.

13085558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6542781.

The product of its (nonzero) digits is 24000, while the sum is 35.

The square root of 13085558 is about 3617.3965776508. The cubic root of 13085558 is about 235.6481758543.

The spelling of 13085558 in words is "thirteen million, eighty-five thousand, five hundred fifty-eight".