5511989 has 4 divisors (see below), whose sum is σ = 6299424. Its totient is φ = 4724556.

The previous prime is 5511983. The next prime is 5511997. The reversal of 5511989 is 9891155.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5511989 - 2¹² = 5507893 is a prime.

It is a super-2 number, since 2×5511989² = 60764045472242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5511983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 393707 + ... + 393720.

It is an arithmetic number, because the mean of its divisors is an integer number (1574856).

Almost surely, 2^5511989 is an apocalyptic number.

It is an amenable number.

5511989 is a deficient number, since it is larger than the sum of its proper divisors (787435).

5511989 is an equidigital number, since it uses as much as digits as its factorization.

5511989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 787434.

The product of its digits is 16200, while the sum is 38.

The square root of 5511989 is about 2347.7625518779. The cubic root of 5511989 is about 176.6455823103.

The spelling of 5511989 in words is "five million, five hundred eleven thousand, nine hundred eighty-nine".