2559605 has 8 divisors (see below), whose sum is σ = 3252312. Its totient is φ = 1927168.

The previous prime is 2559593. The next prime is 2559607. The reversal of 2559605 is 5069552.

It can be written as a sum of positive squares in 4 ways, for example, as 1136356 + 1423249 = 1066^2 + 1193^2 .

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 2559605 - 2⁶ = 2559541 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 (2559607) 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, 14972 + ... + 15141.

It is an arithmetic number, because the mean of its divisors is an integer number (406539).

2^2559605 is an apocalyptic number.

It is an amenable number.

2559605 is a deficient number, since it is larger than the sum of its proper divisors (692707).

2559605 is a wasteful number, since it uses less digits than its factorization.

2559605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30135.

The product of its (nonzero) digits is 13500, while the sum is 32.

The square root of 2559605 is about 1599.8765577381. The cubic root of 2559605 is about 136.7910395337.

The spelling of 2559605 in words is "two million, five hundred fifty-nine thousand, six hundred five".