5561864 has 32 divisors (see below), whose sum is σ = 13003200. Its totient is φ = 2166720.

The previous prime is 5561863. The next prime is 5561869. The reversal of 5561864 is 4681655.

It is a happy number.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (5561861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3899 + ... + 5130.

It is an arithmetic number, because the mean of its divisors is an integer number (406350).

Almost surely, 2^5561864 is an apocalyptic number.

It is an amenable number.

5561864 is an abundant number, since it is smaller than the sum of its proper divisors (7441336).

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

5561864 is a wasteful number, since it uses less digits than its factorization.

5561864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9053 (or 9049 counting only the distinct ones).

The product of its digits is 28800, while the sum is 35.

The square root of 5561864 is about 2358.3604474295. The cubic root of 5561864 is about 177.1767733979.

The spelling of 5561864 in words is "five million, five hundred sixty-one thousand, eight hundred sixty-four".