2255509 has 8 divisors (see below), whose sum is σ = 2514240. Its totient is φ = 2010816.

The previous prime is 2255507. The next prime is 2255549. The reversal of 2255509 is 9055522.

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

It is a cyclic number.

It is not a de Polignac number, because 2255509 - 2¹ = 2255507 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 (2255501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3169 + ... + 3814.

It is an arithmetic number, because the mean of its divisors is an integer number (314280).

2^2255509 is an apocalyptic number.

It is an amenable number.

2255509 is a deficient number, since it is larger than the sum of its proper divisors (258731).

2255509 is a wasteful number, since it uses less digits than its factorization.

2255509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7019.

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 2255509 is about 1501.8352106673. The cubic root of 2255509 is about 131.1439282073.

It can be divided in two parts, 225 and 5509, that multiplied together give a triangular number (1239525 = T₁₅₇₄).

The spelling of 2255509 in words is "two million, two hundred fifty-five thousand, five hundred nine".