2261859 has 8 divisors (see below), whose sum is σ = 3043920. Its totient is φ = 1493856.

The previous prime is 2261851. The next prime is 2261863. The reversal of 2261859 is 9581622.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2261859 - 2³ = 2261851 is a prime.

It is a super-2 number, since 2×2261859² = 10232012271762, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2¹⁰ + 2¹⁴ + 6⁸ + 1 + 8⁵ + 5⁴ + 9⁶ .

2261859 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2261851) 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, 3132 + ... + 3785.

It is an arithmetic number, because the mean of its divisors is an integer number (380490).

2^2261859 is an apocalyptic number.

2261859 is a deficient number, since it is larger than the sum of its proper divisors (782061).

2261859 is a wasteful number, since it uses less digits than its factorization.

2261859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7029.

The product of its digits is 8640, while the sum is 33.

The square root of 2261859 is about 1503.9478049454. The cubic root of 2261859 is about 131.2668839958.

The spelling of 2261859 in words is "two million, two hundred sixty-one thousand, eight hundred fifty-nine".