550289 has 2 divisors, whose sum is σ = 550290. Its totient is φ = 550288.
The previous prime is 550283. The next prime is 550309. The reversal of 550289 is 982055.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 369664 + 180625 = 608^2 + 425^2 .
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-550289 is a prime.
It is a congruent number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 550289.
It is not a weakly prime, because it can be changed into another prime (550283) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275144 + 275145.
It is an arithmetic number, because the mean of its divisors is an integer number (275145).
2550289 is an apocalyptic number.
It is an amenable number.
550289 is a deficient number, since it is larger than the sum of its proper divisors (1).
550289 is an equidigital number, since it uses as much as digits as its factorization.
550289 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 3600, while the sum is 29.
The square root of 550289 is about 741.8146668812. The cubic root of 550289 is about 81.9464750835.
The spelling of 550289 in words is "five hundred fifty thousand, two hundred eighty-nine".
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