13550401 has 8 divisors (see below), whose sum is σ = 14300000. Its totient is φ = 12804480.

The previous prime is 13550347. The next prime is 13550413. The reversal of 13550401 is 10405531.

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

It is not a de Polignac number, because 13550401 - 2⁹ = 13549889 is a prime.

It is a super-2 number, since 2×13550401² = 367226734521602, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13550491) 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, 10225 + ... + 11473.

It is an arithmetic number, because the mean of its divisors is an integer number (1787500).

Almost surely, 2^13550401 is an apocalyptic number.

It is an amenable number.

13550401 is a deficient number, since it is larger than the sum of its proper divisors (749599).

13550401 is a wasteful number, since it uses less digits than its factorization.

13550401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1839.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 13550401 is about 3681.0869318722. The cubic root of 13550401 is about 238.4061105385.

Adding to 13550401 its reverse (10405531), we get a palindrome (23955932).

The spelling of 13550401 in words is "thirteen million, five hundred fifty thousand, four hundred one".