2520609 has 24 divisors (see below), whose sum is σ = 4213440. Its totient is φ = 1328544.

The previous prime is 2520601. The next prime is 2520611. The reversal of 2520609 is 9060252.

It is not a de Polignac number, because 2520609 - 2³ = 2520601 is a prime.

It is a Curzon number.

2520609 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2520601) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1252 + ... + 2570.

It is an arithmetic number, because the mean of its divisors is an integer number (175560).

2^2520609 is an apocalyptic number.

It is an amenable number.

2520609 is a deficient number, since it is larger than the sum of its proper divisors (1692831).

2520609 is a wasteful number, since it uses less digits than its factorization.

2520609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1349 (or 1342 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 2520609 is about 1587.6425920213. The cubic root of 2520609 is about 136.0928035845.

The spelling of 2520609 in words is "two million, five hundred twenty thousand, six hundred nine".