550061 has 2 divisors, whose sum is σ = 550062.
Its totient is φ = 550060.
The previous prime is 550049. The next prime is 550063. The reversal of 550061 is 160055.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 532900 + 17161 = 730^2 + 131^2
It is a cyclic number.
It is not a de Polignac number, because 550061 - 210 = 549037 is a prime.
It is a Sophie Germain prime.
Together with 550063, it forms a pair of twin primes.
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 (550063) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275030 + 275031.
It is an arithmetic number, because the mean of its divisors is an integer number (275031).
2550061 is an apocalyptic number.
It is an amenable number.
550061 is a deficient number, since it is larger than the sum of its proper divisors (1).
550061 is an equidigital number, since it uses as much as digits as its factorization.
550061 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 150, while the sum is 17.
The square root of 550061 is about 741.6609737609.
The cubic root of 550061 is about 81.9351559540.
The spelling of 550061 in words is "five hundred fifty thousand, sixty-one".