2209541 has 8 divisors (see below), whose sum is σ = 2441664. Its totient is φ = 1988800.

The previous prime is 2209523. The next prime is 2209547. The reversal of 2209541 is 1459022.

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 2209541 - 2¹⁰ = 2208517 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

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 (2209547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2435 + ... + 3216.

It is an arithmetic number, because the mean of its divisors is an integer number (305208).

2^2209541 is an apocalyptic number.

It is an amenable number.

2209541 is a deficient number, since it is larger than the sum of its proper divisors (232123).

2209541 is a wasteful number, since it uses less digits than its factorization.

2209541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5691.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 2209541 is about 1486.4524883090. The cubic root of 2209541 is about 130.2468878313.

The spelling of 2209541 in words is "two million, two hundred nine thousand, five hundred forty-one".