13550331 has 8 divisors (see below), whose sum is σ = 18285120. Its totient is φ = 8924552.

The previous prime is 13550297. The next prime is 13550347. The reversal of 13550331 is 13305531.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 13550331 - 2⁶ = 13550267 is a prime.

It is a super-2 number, since 2×13550331² = 367222940419122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13550298 and 13550307.

It is not an unprimeable number, because it can be changed into a prime (13550231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26961 + ... + 27458.

It is an arithmetic number, because the mean of its divisors is an integer number (2285640).

Almost surely, 2^13550331 is an apocalyptic number.

13550331 is a deficient number, since it is larger than the sum of its proper divisors (4734789).

13550331 is an equidigital number, since it uses as much as digits as its factorization.

13550331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54505.

The product of its (nonzero) digits is 675, while the sum is 21.

The square root of 13550331 is about 3681.0774237986. The cubic root of 13550331 is about 238.4057000105.

Adding to 13550331 its reverse (13305531), we get a palindrome (26855862).

The spelling of 13550331 in words is "thirteen million, five hundred fifty thousand, three hundred thirty-one".