2261523 has 8 divisors (see below), whose sum is σ = 3289536. Its totient is φ = 1370600.

The previous prime is 2261509. The next prime is 2261531. The reversal of 2261523 is 3251622.

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

It is not a de Polignac number, because 2261523 - 2⁸ = 2261267 is a prime.

It is a super-2 number, since 2×2261523² = 10228972559058, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2¹⁴ + 2¹⁶ + 6⁵ + 1 + 5⁶ + 2²¹ + 3¹⁰ .

It is a self number, because there is not a number n which added to its sum of digits gives 2261523.

It is not an unprimeable number, because it can be changed into a prime (2261503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34233 + ... + 34298.

It is an arithmetic number, because the mean of its divisors is an integer number (411192).

2^2261523 is an apocalyptic number.

2261523 is a deficient number, since it is larger than the sum of its proper divisors (1028013).

2261523 is a wasteful number, since it uses less digits than its factorization.

2261523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68545.

The product of its digits is 720, while the sum is 21.

The square root of 2261523 is about 1503.8360947922. The cubic root of 2261523 is about 131.2603837590.

Subtracting 2261523 from its reverse (3251622), we obtain a palindrome (990099).

The spelling of 2261523 in words is "two million, two hundred sixty-one thousand, five hundred twenty-three".