2580506 has 8 divisors (see below), whose sum is σ = 3882900. Its totient is φ = 1286208.

The previous prime is 2580497. The next prime is 2580509. The reversal of 2580506 is 6050852.

It can be written as a sum of positive squares in 2 ways, for example, as 2544025 + 36481 = 1595^2 + 191^2 .

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

It is a super-2 number, since 2×2580506² = 13318022432072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2580509) 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, 1151 + ... + 2546.

2^2580506 is an apocalyptic number.

2580506 is a deficient number, since it is larger than the sum of its proper divisors (1302394).

2580506 is a wasteful number, since it uses less digits than its factorization.

2580506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4048.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 2580506 is about 1606.3953436187. The cubic root of 2580506 is about 137.1623627803.

The spelling of 2580506 in words is "two million, five hundred eighty thousand, five hundred six".