2558540 has 24 divisors (see below), whose sum is σ = 5656560. Its totient is φ = 969408.

The previous prime is 2558533. The next prime is 2558581. The reversal of 2558540 is 458552.

It is a super-2 number, since 2×2558540² = 13092253863200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2987 + ... + 3746.

It is an arithmetic number, because the mean of its divisors is an integer number (235690).

2^2558540 is an apocalyptic number.

2558540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2558540 is an abundant number, since it is smaller than the sum of its proper divisors (3098020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2558540 is a wasteful number, since it uses less digits than its factorization.

2558540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6761 (or 6759 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 29.

The square root of 2558540 is about 1599.5436849302. The cubic root of 2558540 is about 136.7720649046.

The spelling of 2558540 in words is "two million, five hundred fifty-eight thousand, five hundred forty".