3609541 has 4 divisors (see below), whose sum is σ = 3887212. Its totient is φ = 3331872.

The previous prime is 3609533. The next prime is 3609581. The reversal of 3609541 is 1459063.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1459063 = 251 ⋅5813.

It can be written as a sum of positive squares in 2 ways, for example, as 172225 + 3437316 = 415^2 + 1854^2 .

It is a cyclic number.

It is not a de Polignac number, because 3609541 - 2³ = 3609533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3609581) 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, 138816 + ... + 138841.

It is an arithmetic number, because the mean of its divisors is an integer number (971803).

Almost surely, 2^3609541 is an apocalyptic number.

It is an amenable number.

3609541 is a deficient number, since it is larger than the sum of its proper divisors (277671).

3609541 is a wasteful number, since it uses less digits than its factorization.

3609541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277670.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 3609541 is about 1899.8792066866. The cubic root of 3609541 is about 153.3971625666.

The spelling of 3609541 in words is "three million, six hundred nine thousand, five hundred forty-one".