5559861 has 16 divisors (see below), whose sum is σ = 7616000. Its totient is φ = 3606768.

The previous prime is 5559847. The next prime is 5559877. The reversal of 5559861 is 1689555.

It is not a de Polignac number, because 5559861 - 2⁷ = 5559733 is a prime.

It is a Duffinian number.

It is a Curzon number.

5559861 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5559811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27840 + ... + 28038.

It is an arithmetic number, because the mean of its divisors is an integer number (476000).

Almost surely, 2^5559861 is an apocalyptic number.

It is an amenable number.

5559861 is a deficient number, since it is larger than the sum of its proper divisors (2056139).

5559861 is a wasteful number, since it uses less digits than its factorization.

5559861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408.

The product of its digits is 54000, while the sum is 39.

The square root of 5559861 is about 2357.9357497608. The cubic root of 5559861 is about 177.1555018908.

The spelling of 5559861 in words is "five million, five hundred fifty-nine thousand, eight hundred sixty-one".