2522309 has 4 divisors (see below), whose sum is σ = 2565120. Its totient is φ = 2479500.

The previous prime is 2522297. The next prime is 2522329. The reversal of 2522309 is 9032252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2522309 - 2⁴ = 2522293 is a prime.

It is an Ulam number.

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 (2522329) 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, 21317 + ... + 21434.

It is an arithmetic number, because the mean of its divisors is an integer number (641280).

2^2522309 is an apocalyptic number.

It is an amenable number.

2522309 is a deficient number, since it is larger than the sum of its proper divisors (42811).

2522309 is an equidigital number, since it uses as much as digits as its factorization.

2522309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42810.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 2522309 is about 1588.1778867621. The cubic root of 2522309 is about 136.1233921940.

The spelling of 2522309 in words is "two million, five hundred twenty-two thousand, three hundred nine".