3561245 has 8 divisors (see below), whose sum is σ = 4524984. Its totient is φ = 2681344.

The previous prime is 3561221. The next prime is 3561247. The reversal of 3561245 is 5421653.

It can be written as a sum of positive squares in 4 ways, for example, as 1036324 + 2524921 = 1018^2 + 1589^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3561245 - 2¹⁴ = 3544861 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3561247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20864 + ... + 21033.

It is an arithmetic number, because the mean of its divisors is an integer number (565623).

Almost surely, 2^3561245 is an apocalyptic number.

It is an amenable number.

3561245 is a deficient number, since it is larger than the sum of its proper divisors (963739).

3561245 is a wasteful number, since it uses less digits than its factorization.

3561245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41919.

The product of its digits is 3600, while the sum is 26.

The square root of 3561245 is about 1887.1261219113. The cubic root of 3561245 is about 152.7099321406.

Adding to 3561245 its reverse (5421653), we get a palindrome (8982898).

The spelling of 3561245 in words is "three million, five hundred sixty-one thousand, two hundred forty-five".