2288561 has 8 divisors (see below), whose sum is σ = 2564544. Its totient is φ = 2023920.

The previous prime is 2288527. The next prime is 2288563. The reversal of 2288561 is 1658822.

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 2288561 - 2¹⁴ = 2272177 is a prime.

It is a super-2 number, since 2×2288561² = 10475022901442, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2288563) 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, 2405 + ... + 3218.

It is an arithmetic number, because the mean of its divisors is an integer number (320568).

2^2288561 is an apocalyptic number.

It is an amenable number.

2288561 is a deficient number, since it is larger than the sum of its proper divisors (275983).

2288561 is a wasteful number, since it uses less digits than its factorization.

2288561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5671.

The product of its digits is 7680, while the sum is 32.

The square root of 2288561 is about 1512.7990613429. The cubic root of 2288561 is about 131.7814143267.

The spelling of 2288561 in words is "two million, two hundred eighty-eight thousand, five hundred sixty-one".