2253509 has 4 divisors (see below), whose sum is σ = 2301504. Its totient is φ = 2205516.

The previous prime is 2253499. The next prime is 2253521. The reversal of 2253509 is 9053522.

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 2253509 - 2⁸ = 2253253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2253539) 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, 23927 + ... + 24020.

It is an arithmetic number, because the mean of its divisors is an integer number (575376).

2^2253509 is an apocalyptic number.

It is an amenable number.

2253509 is a deficient number, since it is larger than the sum of its proper divisors (47995).

2253509 is an equidigital number, since it uses as much as digits as its factorization.

2253509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47994.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 2253509 is about 1501.1692109819. The cubic root of 2253509 is about 131.1051541922.

The spelling of 2253509 in words is "two million, two hundred fifty-three thousand, five hundred nine".