550055501 has 2 divisors, whose sum is σ = 550055502. Its totient is φ = 550055500.

The previous prime is 550055477. The next prime is 550055521. The reversal of 550055501 is 105550055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 443944900 + 106110601 = 21070^2 + 10301^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-550055501 is a prime.

It is a super-2 number, since 2×550055501² = 605122108360722002, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (550055521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275027750 + 275027751.

It is an arithmetic number, because the mean of its divisors is an integer number (275027751).

Almost surely, 2^550055501 is an apocalyptic number.

It is an amenable number.

550055501 is a deficient number, since it is larger than the sum of its proper divisors (1).

550055501 is an equidigital number, since it uses as much as digits as its factorization.

550055501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3125, while the sum is 26.

The square root of 550055501 is about 23453.2620545629. The cubic root of 550055501 is about 819.3488291584.

It can be divided in two parts, 55005 and 5501, that added together give a palindrome (60506).

The spelling of 550055501 in words is "five hundred fifty million, fifty-five thousand, five hundred one".