13555803 has 4 divisors (see below), whose sum is σ = 18074408. Its totient is φ = 9037200.

The previous prime is 13555799. The next prime is 13555807. The reversal of 13555803 is 30855531.

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

It is an interprime number because it is at equal distance from previous prime (13555799) and next prime (13555807).

It is not a de Polignac number, because 13555803 - 2² = 13555799 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13555807) 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, 2259298 + ... + 2259303.

It is an arithmetic number, because the mean of its divisors is an integer number (4518602).

Almost surely, 2^13555803 is an apocalyptic number.

13555803 is a deficient number, since it is larger than the sum of its proper divisors (4518605).

13555803 is an equidigital number, since it uses as much as digits as its factorization.

13555803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4518604.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 13555803 is about 3681.8206094268. The cubic root of 13555803 is about 238.4377873060.

The spelling of 13555803 in words is "thirteen million, five hundred fifty-five thousand, eight hundred three".