13550091 has 8 divisors (see below), whose sum is σ = 18094080. Its totient is φ = 9019752.

The previous prime is 13550081. The next prime is 13550093. The reversal of 13550091 is 19005531.

13550091 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13550091 - 2⁹ = 13549579 is a prime.

It is a super-2 number, since 2×13550091² = 367209932216562, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13550093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 811 + ... + 5268.

It is an arithmetic number, because the mean of its divisors is an integer number (2261760).

Almost surely, 2^13550091 is an apocalyptic number.

13550091 is a deficient number, since it is larger than the sum of its proper divisors (4543989).

13550091 is an equidigital number, since it uses as much as digits as its factorization.

13550091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6825.

The product of its (nonzero) digits is 675, while the sum is 24.

The square root of 13550091 is about 3681.0448245030. The cubic root of 13550091 is about 238.4042924752.

The spelling of 13550091 in words is "thirteen million, five hundred fifty thousand, ninety-one".