2261923 has 4 divisors (see below), whose sum is σ = 2265408. Its totient is φ = 2258440.

The previous prime is 2261911. The next prime is 2261927. The reversal of 2261923 is 3291622.

It is a happy number.

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 2261923 - 2⁵ = 2261891 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2⁴ + 2²⁰ + 6⁶ + 1 + 9⁵ + 2²⁰ + 3¹⁰ .

It is a Duffinian number.

2261923 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2261927) 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, 448 + ... + 2173.

It is an arithmetic number, because the mean of its divisors is an integer number (566352).

2^2261923 is an apocalyptic number.

2261923 is a deficient number, since it is larger than the sum of its proper divisors (3485).

2261923 is an equidigital number, since it uses as much as digits as its factorization.

2261923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3484.

The product of its digits is 1296, while the sum is 25.

The square root of 2261923 is about 1503.9690821290. The cubic root of 2261923 is about 131.2681220631.

The spelling of 2261923 in words is "two million, two hundred sixty-one thousand, nine hundred twenty-three".