13551227 has 4 divisors (see below), whose sum is σ = 14348376. Its totient is φ = 12754080.

The previous prime is 13551217. The next prime is 13551233. The reversal of 13551227 is 72215531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72215531 = 617 ⋅117043.

It is not a de Polignac number, because 13551227 - 2¹⁸ = 13289083 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13551196 and 13551205.

It is not an unprimeable number, because it can be changed into a prime (13551217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 398549 + ... + 398582.

It is an arithmetic number, because the mean of its divisors is an integer number (3587094).

Almost surely, 2^13551227 is an apocalyptic number.

13551227 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

13551227 is a deficient number, since it is larger than the sum of its proper divisors (797149).

13551227 is an equidigital number, since it uses as much as digits as its factorization.

13551227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797148.

The product of its digits is 2100, while the sum is 26.

The square root of 13551227 is about 3681.1991252851. The cubic root of 13551227 is about 238.4109546619.

Adding to 13551227 its reverse (72215531), we get a palindrome (85766758).

The spelling of 13551227 in words is "thirteen million, five hundred fifty-one thousand, two hundred twenty-seven".