3561043 has 4 divisors (see below), whose sum is σ = 3579688. Its totient is φ = 3542400.

The previous prime is 3561023. The next prime is 3561053. The reversal of 3561043 is 3401653.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3401653 = 409 ⋅8317.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3561043 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3561023) 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, 9033 + ... + 9418.

It is an arithmetic number, because the mean of its divisors is an integer number (894922).

Almost surely, 2^3561043 is an apocalyptic number.

3561043 is a deficient number, since it is larger than the sum of its proper divisors (18645).

3561043 is a wasteful number, since it uses less digits than its factorization.

3561043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18644.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 3561043 is about 1887.0726006172. The cubic root of 3561043 is about 152.7070447618.

Adding to 3561043 its reverse (3401653), we get a palindrome (6962696).

It can be divided in two parts, 35610 and 43, that added together give a palindrome (35653).

The spelling of 3561043 in words is "three million, five hundred sixty-one thousand, forty-three".