550006993 has 2 divisors, whose sum is σ = 550006994. Its totient is φ = 550006992.

The previous prime is 550006973. The next prime is 550007009. The reversal of 550006993 is 399600055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 524776464 + 25230529 = 22908^2 + 5023^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-550006993 is a prime.

550006993 is a modest number, since divided by 6993 gives 550 as remainder.

It is equal to p_28845703 and since 550006993 and 28845703 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (550006943) 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, 275003496 + 275003497.

It is an arithmetic number, because the mean of its divisors is an integer number (275003497).

Almost surely, 2^550006993 is an apocalyptic number.

It is an amenable number.

550006993 is a deficient number, since it is larger than the sum of its proper divisors (1).

550006993 is an equidigital number, since it uses as much as digits as its factorization.

550006993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36450, while the sum is 37.

The square root of 550006993 is about 23452.2278899042. The cubic root of 550006993 is about 819.3247430184.

The spelling of 550006993 in words is "five hundred fifty million, six thousand, nine hundred ninety-three".