13551441 has 4 divisors (see below), whose sum is σ = 18068592. Its totient is φ = 9034292.

The previous prime is 13551437. The next prime is 13551449. The reversal of 13551441 is 14415531.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13551441 - 2² = 13551437 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13551449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2258571 + ... + 2258576.

It is an arithmetic number, because the mean of its divisors is an integer number (4517148).

Almost surely, 2^13551441 is an apocalyptic number.

It is an amenable number.

13551441 is a deficient number, since it is larger than the sum of its proper divisors (4517151).

13551441 is an equidigital number, since it uses as much as digits as its factorization.

13551441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4517150.

The product of its digits is 1200, while the sum is 24.

The square root of 13551441 is about 3681.2281917860. The cubic root of 13551441 is about 238.4122096449.

Adding to 13551441 its reverse (14415531), we get a palindrome (27966972).

The spelling of 13551441 in words is "thirteen million, five hundred fifty-one thousand, four hundred forty-one".