5563645 has 4 divisors (see below), whose sum is σ = 6676380. Its totient is φ = 4450912.

The previous prime is 5563643. The next prime is 5563651. The reversal of 5563645 is 5463655.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5463655 = 5 ⋅1092731.

It can be written as a sum of positive squares in 2 ways, for example, as 2137444 + 3426201 = 1462^2 + 1851^2 .

It is a cyclic number.

It is not a de Polignac number, because 5563645 - 2¹ = 5563643 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 5563645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5563643) 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, 556360 + ... + 556369.

It is an arithmetic number, because the mean of its divisors is an integer number (1669095).

Almost surely, 2^5563645 is an apocalyptic number.

It is an amenable number.

5563645 is a deficient number, since it is larger than the sum of its proper divisors (1112735).

5563645 is a wasteful number, since it uses less digits than its factorization.

5563645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1112734.

The product of its digits is 54000, while the sum is 34.

The square root of 5563645 is about 2358.7380100384. The cubic root of 5563645 is about 177.1956830151.

The spelling of 5563645 in words is "five million, five hundred sixty-three thousand, six hundred forty-five".