3561324061 has 4 divisors (see below), whose sum is σ = 3562335612. Its totient is φ = 3560312512.

The previous prime is 3561324059. The next prime is 3561324079. The reversal of 3561324061 is 1604231653.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1604231653 = 59 ⋅27190367.

It can be written as a sum of positive squares in 2 ways, for example, as 3389451961 + 171872100 = 58219^2 + 13110^2 .

It is a cyclic number.

It is not a de Polignac number, because 3561324061 - 2¹ = 3561324059 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3561354061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 500476 + ... + 507541.

It is an arithmetic number, because the mean of its divisors is an integer number (890583903).

Almost surely, 2^3561324061 is an apocalyptic number.

It is an amenable number.

3561324061 is a deficient number, since it is larger than the sum of its proper divisors (1011551).

3561324061 is a wasteful number, since it uses less digits than its factorization.

3561324061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011550.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 3561324061 is about 59676.8301855921. The cubic root of 3561324061 is about 1527.1106220520.

The spelling of 3561324061 in words is "three billion, five hundred sixty-one million, three hundred twenty-four thousand, sixty-one".