2558834 has 4 divisors (see below), whose sum is σ = 3838254. Its totient is φ = 1279416.

The previous prime is 2558813. The next prime is 2558837. The reversal of 2558834 is 4388552.

2558834 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 can be written as a sum of positive squares in only one way, i.e., 1315609 + 1243225 = 1147^2 + 1115^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2558794 and 2558803.

It is not an unprimeable number, because it can be changed into a prime (2558837) 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 as a sum of consecutive naturals, namely, 639707 + ... + 639710.

2^2558834 is an apocalyptic number.

2558834 is a deficient number, since it is larger than the sum of its proper divisors (1279420).

2558834 is a wasteful number, since it uses less digits than its factorization.

2558834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1279419.

The product of its digits is 38400, while the sum is 35.

The square root of 2558834 is about 1599.6355835002. The cubic root of 2558834 is about 136.7773034973. Note that the first 3 decimals are identical.

The spelling of 2558834 in words is "two million, five hundred fifty-eight thousand, eight hundred thirty-four".