550665001 has 2 divisors, whose sum is σ = 550665002. Its totient is φ = 550665000.

The previous prime is 550664993. The next prime is 550665083. The reversal of 550665001 is 100566055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 542936601 + 7728400 = 23301^2 + 2780^2 .

It is a cyclic number.

It is not a de Polignac number, because 550665001 - 2³ = 550664993 is a prime.

It is not a weakly prime, because it can be changed into another prime (550662001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275332500 + 275332501.

It is an arithmetic number, because the mean of its divisors is an integer number (275332501).

Almost surely, 2^550665001 is an apocalyptic number.

It is an amenable number.

550665001 is a deficient number, since it is larger than the sum of its proper divisors (1).

550665001 is an equidigital number, since it uses as much as digits as its factorization.

550665001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 550665001 is about 23466.2523850742. The cubic root of 550665001 is about 819.6513494009.

It can be divided in two parts, 5506 and 65001, that added together give a palindrome (70507).

The spelling of 550665001 in words is "five hundred fifty million, six hundred sixty-five thousand, one".