2558216 has 16 divisors (see below), whose sum is σ = 4851900. Its totient is φ = 1264384.

The previous prime is 2558203. The next prime is 2558219. The reversal of 2558216 is 6128552.

It can be written as a sum of positive squares in 2 ways, for example, as 2390116 + 168100 = 1546^2 + 410^2 .

It is not an unprimeable number, because it can be changed into a prime (2558219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1085 + ... + 2508.

2^2558216 is an apocalyptic number.

It is an amenable number.

2558216 is a deficient number, since it is larger than the sum of its proper divisors (2293684).

2558216 is a wasteful number, since it uses less digits than its factorization.

2558216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3688 (or 3684 counting only the distinct ones).

The product of its digits is 4800, while the sum is 29.

The square root of 2558216 is about 1599.4424028392. The cubic root of 2558216 is about 136.7662912967.

The spelling of 2558216 in words is "two million, five hundred fifty-eight thousand, two hundred sixteen".