2261085559 has 4 divisors (see below), whose sum is σ = 2270094120. Its totient is φ = 2252077000.

The previous prime is 2261085529. The next prime is 2261085569. The reversal of 2261085559 is 9555801622.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2261085559 - 2²⁵ = 2227531127 is a prime.

It is a super-2 number, since 2×2261085559² = 10225015810236684962, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2261085529) 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, 4503904 + ... + 4504405.

It is an arithmetic number, because the mean of its divisors is an integer number (567523530).

Almost surely, 2^2261085559 is an apocalyptic number.

2261085559 is a deficient number, since it is larger than the sum of its proper divisors (9008561).

2261085559 is an equidigital number, since it uses as much as digits as its factorization.

2261085559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9008560.

The product of its (nonzero) digits is 216000, while the sum is 43.

The square root of 2261085559 is about 47550.8733778887. The cubic root of 2261085559 is about 1312.5192008559.

The spelling of 2261085559 in words is "two billion, two hundred sixty-one million, eighty-five thousand, five hundred fifty-nine".