550122857 has 2 divisors, whose sum is σ = 550122858. Its totient is φ = 550122856.

The previous prime is 550122847. The next prime is 550122877. The reversal of 550122857 is 758221055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 503733136 + 46389721 = 22444^2 + 6811^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-550122857 is a prime.

It is not a weakly prime, because it can be changed into another prime (550122847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275061428 + 275061429.

It is an arithmetic number, because the mean of its divisors is an integer number (275061429).

Almost surely, 2^550122857 is an apocalyptic number.

It is an amenable number.

550122857 is a deficient number, since it is larger than the sum of its proper divisors (1).

550122857 is an equidigital number, since it uses as much as digits as its factorization.

550122857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28000, while the sum is 35.

The square root of 550122857 is about 23454.6979729009. The cubic root of 550122857 is about 819.3822717275.

The spelling of 550122857 in words is "five hundred fifty million, one hundred twenty-two thousand, eight hundred fifty-seven".