554891 has 2 divisors, whose sum is σ = 554892. Its totient is φ = 554890.

The previous prime is 554887. The next prime is 554893. The reversal of 554891 is 198455.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 554891 - 2² = 554887 is a prime.

It is a Sophie Germain prime.

Together with 554893, it forms a pair of twin primes.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 554891.

It is not a weakly prime, because it can be changed into another prime (554893) 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, 277445 + 277446.

It is an arithmetic number, because the mean of its divisors is an integer number (277446).

2⁵⁵⁴⁸⁹¹ is an apocalyptic number.

554891 is a deficient number, since it is larger than the sum of its proper divisors (1).

554891 is an equidigital number, since it uses as much as digits as its factorization.

554891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7200, while the sum is 32.

The square root of 554891 is about 744.9100616853. The cubic root of 554891 is about 82.1742773670.

The spelling of 554891 in words is "five hundred fifty-four thousand, eight hundred ninety-one".