13427555 has 4 divisors (see below), whose sum is σ = 16113072. Its totient is φ = 10742040.

The previous prime is 13427549. The next prime is 13427563. The reversal of 13427555 is 55572431.

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

It is not a de Polignac number, because 13427555 - 2¹⁰ = 13426531 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, 1342751 + ... + 1342760.

It is an arithmetic number, because the mean of its divisors is an integer number (4028268).

Almost surely, 2^13427555 is an apocalyptic number.

13427555 is a deficient number, since it is larger than the sum of its proper divisors (2685517).

13427555 is an equidigital number, since it uses as much as digits as its factorization.

13427555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2685516.

The product of its digits is 21000, while the sum is 32.

The square root of 13427555 is about 3664.3628368381. The cubic root of 13427555 is about 237.6834704197.

Adding to 13427555 its reverse (55572431), we get a palindrome (68999986).

The spelling of 13427555 in words is "thirteen million, four hundred twenty-seven thousand, five hundred fifty-five".