13555427 has 4 divisors (see below), whose sum is σ = 13785240. Its totient is φ = 13325616.

The previous prime is 13555403. The next prime is 13555429. The reversal of 13555427 is 72455531.

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

It is a cyclic number.

It is not a de Polignac number, because 13555427 - 2¹⁰ = 13554403 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13555393 and 13555402.

It is not an unprimeable number, because it can be changed into a prime (13555429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114818 + ... + 114935.

It is an arithmetic number, because the mean of its divisors is an integer number (3446310).

Almost surely, 2^13555427 is an apocalyptic number.

13555427 is a deficient number, since it is larger than the sum of its proper divisors (229813).

13555427 is an equidigital number, since it uses as much as digits as its factorization.

13555427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229812.

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

The square root of 13555427 is about 3681.7695473780. The cubic root of 13555427 is about 238.4355827535.

The spelling of 13555427 in words is "thirteen million, five hundred fifty-five thousand, four hundred twenty-seven".