555091 has 2 divisors, whose sum is σ = 555092. Its totient is φ = 555090.

The previous prime is 555083. The next prime is 555097. The reversal of 555091 is 190555.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 555091 - 2³ = 555083 is a prime.

It is not a weakly prime, because it can be changed into another prime (555097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277545 + 277546.

It is an arithmetic number, because the mean of its divisors is an integer number (277546).

2⁵⁵⁵⁰⁹¹ is an apocalyptic number.

555091 is a deficient number, since it is larger than the sum of its proper divisors (1).

555091 is an equidigital number, since it uses as much as digits as its factorization.

555091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1125, while the sum is 25.

The square root of 555091 is about 745.0442939853. The cubic root of 555091 is about 82.1841489041.

The spelling of 555091 in words is "five hundred fifty-five thousand, ninety-one".