13423555 has 4 divisors (see below), whose sum is σ = 16108272. Its totient is φ = 10738840.

The previous prime is 13423547. The next prime is 13423573. The reversal of 13423555 is 55532431.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 13423555 - 2³ = 13423547 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 1342351 + ... + 1342360.

It is an arithmetic number, because the mean of its divisors is an integer number (4027068).

Almost surely, 2^13423555 is an apocalyptic number.

13423555 is a deficient number, since it is larger than the sum of its proper divisors (2684717).

13423555 is an equidigital number, since it uses as much as digits as its factorization.

13423555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2684716.

The product of its digits is 9000, while the sum is 28.

The square root of 13423555 is about 3663.8169987050. The cubic root of 13423555 is about 237.6598665121.

Adding to 13423555 its reverse (55532431), we get a palindrome (68955986).

The spelling of 13423555 in words is "thirteen million, four hundred twenty-three thousand, five hundred fifty-five".