5521866 has 32 divisors (see below), whose sum is σ = 12801408. Its totient is φ = 1555200.

The previous prime is 5521819. The next prime is 5521891. The reversal of 5521866 is 6681255.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2166 + ... + 3966.

It is an arithmetic number, because the mean of its divisors is an integer number (400044).

Almost surely, 2^5521866 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5521866, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6400704).

5521866 is an abundant number, since it is smaller than the sum of its proper divisors (7279542).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5521866 is a wasteful number, since it uses less digits than its factorization.

5521866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1886.

The product of its digits is 14400, while the sum is 33.

The square root of 5521866 is about 2349.8651025112. The cubic root of 5521866 is about 176.7510304719.

The spelling of 5521866 in words is "five million, five hundred twenty-one thousand, eight hundred sixty-six".