550000993 has 2 divisors, whose sum is σ = 550000994. Its totient is φ = 550000992.

The previous prime is 550000991. The next prime is 550001027. The reversal of 550000993 is 399000055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 435682129 + 114318864 = 20873^2 + 10692^2 .

It is a cyclic number.

It is not a de Polignac number, because 550000993 - 2¹ = 550000991 is a prime.

Together with 550000991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (550000991) 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, 275000496 + 275000497.

It is an arithmetic number, because the mean of its divisors is an integer number (275000497).

Almost surely, 2^550000993 is an apocalyptic number.

It is an amenable number.

550000993 is a deficient number, since it is larger than the sum of its proper divisors (1).

550000993 is an equidigital number, since it uses as much as digits as its factorization.

550000993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6075, while the sum is 31.

The square root of 550000993 is about 23452.0999699387. The cubic root of 550000993 is about 819.3217636828.

The spelling of 550000993 in words is "five hundred fifty million, nine hundred ninety-three", and thus it is an aban number.