555955091 has 2 divisors, whose sum is σ = 555955092. Its totient is φ = 555955090.

The previous prime is 555955087. The next prime is 555955093. The reversal of 555955091 is 190559555.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 555955091 - 2² = 555955087 is a prime.

Together with 555955093, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (555955093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277977545 + 277977546.

It is an arithmetic number, because the mean of its divisors is an integer number (277977546).

Almost surely, 2^555955091 is an apocalyptic number.

555955091 is a deficient number, since it is larger than the sum of its proper divisors (1).

555955091 is an equidigital number, since it uses as much as digits as its factorization.

555955091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 253125, while the sum is 44.

The square root of 555955091 is about 23578.6999429570. The cubic root of 555955091 is about 822.2677120484.

The spelling of 555955091 in words is "five hundred fifty-five million, nine hundred fifty-five thousand, ninety-one".