11155983 has 12 divisors (see below), whose sum is σ = 15700248. Its totient is φ = 7045200.

The previous prime is 11155973. The next prime is 11155993. The reversal of 11155983 is 38955111.

11155983 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11155973) and next prime (11155993).

It is not a de Polignac number, because 11155983 - 2⁵ = 11155951 is a prime.

It is a super-5 number, since 5×11155983⁵ (a number of 36 digits) contains 55555 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11155973) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4068 + ... + 6233.

It is an arithmetic number, because the mean of its divisors is an integer number (1308354).

Almost surely, 2^11155983 is an apocalyptic number.

11155983 is a deficient number, since it is larger than the sum of its proper divisors (4544265).

11155983 is a wasteful number, since it uses less digits than its factorization.

11155983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10342 (or 10323 counting only the distinct ones).

The product of its digits is 5400, while the sum is 33.

The square root of 11155983 is about 3340.0573348372. The cubic root of 11155983 is about 223.4443004402. Note that the first 3 decimals are identical.

The spelling of 11155983 in words is "eleven million, one hundred fifty-five thousand, nine hundred eighty-three".