558091 has 2 divisors, whose sum is σ = 558092. Its totient is φ = 558090.

The previous prime is 558083. The next prime is 558109. The reversal of 558091 is 190855.

Together with next prime (558109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 558091 - 2³ = 558083 is a prime.

It is a super-2 number, since 2×558091² = 622931128562, which contains 22 as substring.

It is equal to p₄₅₉₂₈ and since 558091 and 45928 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (558491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 279045 + 279046.

It is an arithmetic number, because the mean of its divisors is an integer number (279046).

2⁵⁵⁸⁰⁹¹ is an apocalyptic number.

558091 is a deficient number, since it is larger than the sum of its proper divisors (1).

558091 is an equidigital number, since it uses as much as digits as its factorization.

558091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 28.

The square root of 558091 is about 747.0548841953. The cubic root of 558091 is about 82.3319382514.

Subtracting from 558091 its reverse (190855), we obtain a square (367236 = 606²).

It can be divided in two parts, 5580 and 91, that added together give a triangular number (5671 = T₁₀₆).

The spelling of 558091 in words is "five hundred fifty-eight thousand, ninety-one".