550350121 has 2 divisors, whose sum is σ = 550350122. Its totient is φ = 550350120.

The previous prime is 550350109. The next prime is 550350131. The reversal of 550350121 is 121053055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 433472400 + 116877721 = 20820^2 + 10811^2 .

It is a cyclic number.

It is not a de Polignac number, because 550350121 - 2⁵ = 550350089 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 550350092 and 550350101.

It is not a weakly prime, because it can be changed into another prime (550350131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275175060 + 275175061.

It is an arithmetic number, because the mean of its divisors is an integer number (275175061).

Almost surely, 2^550350121 is an apocalyptic number.

It is an amenable number.

550350121 is a deficient number, since it is larger than the sum of its proper divisors (1).

550350121 is an equidigital number, since it uses as much as digits as its factorization.

550350121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 550350121 is about 23459.5422163349. The cubic root of 550350121 is about 819.4950892271.

The spelling of 550350121 in words is "five hundred fifty million, three hundred fifty thousand, one hundred twenty-one".