3561543 has 8 divisors (see below), whose sum is σ = 5276400. Its totient is φ = 2374344.

The previous prime is 3561541. The next prime is 3561581. The reversal of 3561543 is 3451653.

3561543 is a `hidden beast` number, since 3 + 5 + 615 + 43 = 666.

3561543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3561543 - 2¹ = 3561541 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 131909 = 3561543 / (3 + 5 + 6 + 1 + 5 + 4 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3561541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65928 + ... + 65981.

It is an arithmetic number, because the mean of its divisors is an integer number (659550).

Almost surely, 2^3561543 is an apocalyptic number.

3561543 is a deficient number, since it is larger than the sum of its proper divisors (1714857).

3561543 is a wasteful number, since it uses less digits than its factorization.

3561543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131918 (or 131912 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 3561543 is about 1887.2050762967. The cubic root of 3561543 is about 152.7141915396.

The spelling of 3561543 in words is "three million, five hundred sixty-one thousand, five hundred forty-three".