5543645 has 4 divisors (see below), whose sum is σ = 6652380. Its totient is φ = 4434912.

The previous prime is 5543623. The next prime is 5543701. The reversal of 5543645 is 5463455.

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 4239481 + 1304164 = 2059^2 + 1142^2 .

It is a cyclic number.

It is not a de Polignac number, because 5543645 - 2²⁰ = 4495069 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 554360 + ... + 554369.

It is an arithmetic number, because the mean of its divisors is an integer number (1663095).

Almost surely, 2^5543645 is an apocalyptic number.

It is an amenable number.

5543645 is a deficient number, since it is larger than the sum of its proper divisors (1108735).

5543645 is a wasteful number, since it uses less digits than its factorization.

5543645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1108734.

The product of its digits is 36000, while the sum is 32.

The square root of 5543645 is about 2354.4946379213. The cubic root of 5543645 is about 176.9831024332.

The spelling of 5543645 in words is "five million, five hundred forty-three thousand, six hundred forty-five".