555998951 has 2 divisors, whose sum is σ = 555998952. Its totient is φ = 555998950.

The previous prime is 555998929. The next prime is 555998953. The reversal of 555998951 is 159899555.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 555998951 - 2⁶ = 555998887 is a prime.

Together with 555998953, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (555998953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277999475 + 277999476.

It is an arithmetic number, because the mean of its divisors is an integer number (277999476).

Almost surely, 2^555998951 is an apocalyptic number.

555998951 is a deficient number, since it is larger than the sum of its proper divisors (1).

555998951 is an equidigital number, since it uses as much as digits as its factorization.

555998951 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3645000, while the sum is 56.

The square root of 555998951 is about 23579.6300013380. The cubic root of 555998951 is about 822.2893347263.

The spelling of 555998951 in words is "five hundred fifty-five million, nine hundred ninety-eight thousand, nine hundred fifty-one".