13555583 has 2 divisors, whose sum is σ = 13555584. Its totient is φ = 13555582.

The previous prime is 13555561. The next prime is 13555601. The reversal of 13555583 is 38555531.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13555583 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13555523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6777791 + 6777792.

It is an arithmetic number, because the mean of its divisors is an integer number (6777792).

Almost surely, 2^13555583 is an apocalyptic number.

13555583 is a deficient number, since it is larger than the sum of its proper divisors (1).

13555583 is an equidigital number, since it uses as much as digits as its factorization.

13555583 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45000, while the sum is 35.

The square root of 13555583 is about 3681.7907327821. The cubic root of 13555583 is about 238.4364974132.

The spelling of 13555583 in words is "thirteen million, five hundred fifty-five thousand, five hundred eighty-three".