550318361 has 2 divisors, whose sum is σ = 550318362. Its totient is φ = 550318360.

The previous prime is 550318333. The next prime is 550318403. The reversal of 550318361 is 163813055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 549621136 + 697225 = 23444^2 + 835^2 .

It is a cyclic number.

It is not a de Polignac number, because 550318361 - 2¹⁸ = 550056217 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (550312361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275159180 + 275159181.

It is an arithmetic number, because the mean of its divisors is an integer number (275159181).

Almost surely, 2^550318361 is an apocalyptic number.

It is an amenable number.

550318361 is a deficient number, since it is larger than the sum of its proper divisors (1).

550318361 is an equidigital number, since it uses as much as digits as its factorization.

550318361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 550318361 is about 23458.8652965142. The cubic root of 550318361 is about 819.4793249201.

The spelling of 550318361 in words is "five hundred fifty million, three hundred eighteen thousand, three hundred sixty-one".