2305493 has 4 divisors (see below), whose sum is σ = 2309868. Its totient is φ = 2301120.

The previous prime is 2305487. The next prime is 2305549. The reversal of 2305493 is 3945032.

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

It can be written as a sum of positive squares in 2 ways, for example, as 339889 + 1965604 = 583^2 + 1402^2 .

It is a cyclic number.

It is not a de Polignac number, because 2305493 - 2¹⁶ = 2239957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2305463) 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, 1268 + ... + 2493.

It is an arithmetic number, because the mean of its divisors is an integer number (577467).

2^2305493 is an apocalyptic number.

It is an amenable number.

2305493 is a deficient number, since it is larger than the sum of its proper divisors (4375).

2305493 is an equidigital number, since it uses as much as digits as its factorization.

2305493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4374.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 2305493 is about 1518.3849972915. The cubic root of 2305493 is about 132.1056126000.

The spelling of 2305493 in words is "two million, three hundred five thousand, four hundred ninety-three".