2558551 has 4 divisors (see below), whose sum is σ = 2709072. Its totient is φ = 2408032.

The previous prime is 2558533. The next prime is 2558581. The reversal of 2558551 is 1558552.

2558551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2558551 - 2¹¹ = 2556503 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 (2558531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75235 + ... + 75268.

It is an arithmetic number, because the mean of its divisors is an integer number (677268).

2^2558551 is an apocalyptic number.

2558551 is a deficient number, since it is larger than the sum of its proper divisors (150521).

2558551 is a wasteful number, since it uses less digits than its factorization.

2558551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150520.

The product of its digits is 10000, while the sum is 31.

The square root of 2558551 is about 1599.5471234071. The cubic root of 2558551 is about 136.7722609135.

Subtracting from 2558551 its reverse (1558552), we obtain a palindrome (999999).

The spelling of 2558551 in words is "two million, five hundred fifty-eight thousand, five hundred fifty-one".