5509645 has 4 divisors (see below), whose sum is σ = 6611580. Its totient is φ = 4407712.

The previous prime is 5509643. The next prime is 5509657. The reversal of 5509645 is 5469055.

It is a happy number.

5509645 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1811716 + 3697929 = 1346^2 + 1923^2 .

It is a cyclic number.

It is not a de Polignac number, because 5509645 - 2¹ = 5509643 is a prime.

It is a super-3 number, since 3×5509645³ (a number of 21 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 5509645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5509643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 550960 + ... + 550969.

It is an arithmetic number, because the mean of its divisors is an integer number (1652895).

Almost surely, 2^5509645 is an apocalyptic number.

It is an amenable number.

5509645 is a deficient number, since it is larger than the sum of its proper divisors (1101935).

5509645 is a wasteful number, since it uses less digits than its factorization.

5509645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1101934.

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 5509645 is about 2347.2633001008. The cubic root of 5509645 is about 176.6205389638.

The spelling of 5509645 in words is "five million, five hundred nine thousand, six hundred forty-five".