13553426 has 4 divisors (see below), whose sum is σ = 20330142. Its totient is φ = 6776712.

The previous prime is 13553413. The next prime is 13553429. The reversal of 13553426 is 62435531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62435531 = 1427 ⋅43753.

It can be written as a sum of positive squares in only one way, i.e., 12952801 + 600625 = 3599^2 + 775^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13553429) 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 as a sum of consecutive naturals, namely, 3388355 + ... + 3388358.

Almost surely, 2^13553426 is an apocalyptic number.

13553426 is a deficient number, since it is larger than the sum of its proper divisors (6776716).

13553426 is an equidigital number, since it uses as much as digits as its factorization.

13553426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6776715.

The product of its digits is 10800, while the sum is 29.

The square root of 13553426 is about 3681.4977930185. The cubic root of 13553426 is about 238.4238498616.

Adding to 13553426 its reverse (62435531), we get a palindrome (75988957).

The spelling of 13553426 in words is "thirteen million, five hundred fifty-three thousand, four hundred twenty-six".