2005509 has 8 divisors (see below), whose sum is σ = 2917152. Its totient is φ = 1215440.

The previous prime is 2005499. The next prime is 2005519. The reversal of 2005509 is 9055002.

It is an interprime number because it is at equal distance from previous prime (2005499) and next prime (2005519).

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 2005509 - 2¹² = 2001413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2005519) 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, 30354 + ... + 30419.

It is an arithmetic number, because the mean of its divisors is an integer number (364644).

2^2005509 is an apocalyptic number.

It is an amenable number.

2005509 is a deficient number, since it is larger than the sum of its proper divisors (911643).

2005509 is a wasteful number, since it uses less digits than its factorization.

2005509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60787.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 2005509 is about 1416.1599485934. The cubic root of 2005509 is about 126.1076806877.

The spelling of 2005509 in words is "two million, five thousand, five hundred nine".