550189999 has 2 divisors, whose sum is σ = 550190000. Its totient is φ = 550189998.

The previous prime is 550189949. The next prime is 550190009. The reversal of 550189999 is 999981055.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 550189999 - 2²³ = 541801391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (550189919) 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, 275094999 + 275095000.

It is an arithmetic number, because the mean of its divisors is an integer number (275095000).

Almost surely, 2^550189999 is an apocalyptic number.

550189999 is a deficient number, since it is larger than the sum of its proper divisors (1).

550189999 is an equidigital number, since it uses as much as digits as its factorization.

550189999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1312200, while the sum is 55.

The square root of 550189999 is about 23456.1292416289. The cubic root of 550189999 is about 819.4156053279.

The spelling of 550189999 in words is "five hundred fifty million, one hundred eighty-nine thousand, nine hundred ninety-nine".