4193561 has 4 divisors (see below), whose sum is σ = 4197732. Its totient is φ = 4189392.

The previous prime is 4193551. The next prime is 4193569. The reversal of 4193561 is 1653914.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1653914 = 2 ⋅826957.

It can be written as a sum of positive squares in 2 ways, for example, as 1849600 + 2343961 = 1360^2 + 1531^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4193561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4193569) 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, 455 + ... + 2931.

It is an arithmetic number, because the mean of its divisors is an integer number (1049433).

Almost surely, 2^4193561 is an apocalyptic number.

It is an amenable number.

4193561 is a deficient number, since it is larger than the sum of its proper divisors (4171).

4193561 is a wasteful number, since it uses less digits than its factorization.

4193561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4170.

The product of its digits is 3240, while the sum is 29.

The square root of 4193561 is about 2047.8185954815. The cubic root of 4193561 is about 161.2603711055.

The spelling of 4193561 in words is "four million, one hundred ninety-three thousand, five hundred sixty-one".