2291611 has 8 divisors (see below), whose sum is σ = 2630880. Its totient is φ = 1955328.

The previous prime is 2291591. The next prime is 2291623. The reversal of 2291611 is 1161922.

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 2291611 - 2¹³ = 2283419 is a prime.

2291611 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2291911) 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, 1275 + ... + 2491.

It is an arithmetic number, because the mean of its divisors is an integer number (328860).

2^2291611 is an apocalyptic number.

2291611 is a deficient number, since it is larger than the sum of its proper divisors (339269).

2291611 is a wasteful number, since it uses less digits than its factorization.

2291611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1493.

The product of its digits is 216, while the sum is 22.

The square root of 2291611 is about 1513.8067908422. The cubic root of 2291611 is about 131.8399307032.

The spelling of 2291611 in words is "two million, two hundred ninety-one thousand, six hundred eleven".