5611988 has 12 divisors (see below), whose sum is σ = 10030272. Its totient is φ = 2746200.

The previous prime is 5611981. The next prime is 5611997. The reversal of 5611988 is 8891165.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5611981) 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, 14738 + ... + 15113.

It is an arithmetic number, because the mean of its divisors is an integer number (835856).

Almost surely, 2^5611988 is an apocalyptic number.

It is an amenable number.

5611988 is a deficient number, since it is larger than the sum of its proper divisors (4418284).

5611988 is a wasteful number, since it uses less digits than its factorization.

5611988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29902 (or 29900 counting only the distinct ones).

The product of its digits is 17280, while the sum is 38.

The square root of 5611988 is about 2368.9634864219. The cubic root of 5611988 is about 177.7074266200.

The spelling of 5611988 in words is "five million, six hundred eleven thousand, nine hundred eighty-eight".