13555983 has 16 divisors (see below), whose sum is σ = 20738816. Its totient is φ = 7715520.

The previous prime is 13555981. The next prime is 13555999. The reversal of 13555983 is 38955531.

It is a happy number.

It is not a de Polignac number, because 13555983 - 2¹ = 13555981 is a prime.

It is a super-3 number, since 3×13555983³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13555981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4803 + ... + 7083.

It is an arithmetic number, because the mean of its divisors is an integer number (1296176).

Almost surely, 2^13555983 is an apocalyptic number.

13555983 is a deficient number, since it is larger than the sum of its proper divisors (7182833).

13555983 is a wasteful number, since it uses less digits than its factorization.

13555983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2574.

The product of its digits is 81000, while the sum is 39.

The square root of 13555983 is about 3681.8450537740. The cubic root of 13555983 is about 238.4388426624.

The spelling of 13555983 in words is "thirteen million, five hundred fifty-five thousand, nine hundred eighty-three".