5509865 has 8 divisors (see below), whose sum is σ = 6636168. Its totient is φ = 4391680.

The previous prime is 5509859. The next prime is 5509873. The reversal of 5509865 is 5689055.

It can be written as a sum of positive squares in 4 ways, for example, as 1605289 + 3904576 = 1267^2 + 1976^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5509865 - 2¹² = 5505769 is a prime.

It is a super-2 number, since 2×5509865² = 60717224636450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 416 + ... + 3345.

It is an arithmetic number, because the mean of its divisors is an integer number (829521).

Almost surely, 2^5509865 is an apocalyptic number.

It is an amenable number.

5509865 is a deficient number, since it is larger than the sum of its proper divisors (1126303).

5509865 is a wasteful number, since it uses less digits than its factorization.

5509865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4059.

The product of its (nonzero) digits is 54000, while the sum is 38.

The square root of 5509865 is about 2347.3101627182. The cubic root of 5509865 is about 176.6228897505.

The spelling of 5509865 in words is "five million, five hundred nine thousand, eight hundred sixty-five".