550657 has 2 divisors, whose sum is σ = 550658. Its totient is φ = 550656.

The previous prime is 550651. The next prime is 550661. The reversal of 550657 is 756055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 370881 + 179776 = 609^2 + 424^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-550657 is a prime.

It is a super-3 number, since 3×550657³ = 500915820013330179, which contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (550651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275328 + 275329.

It is an arithmetic number, because the mean of its divisors is an integer number (275329).

2⁵⁵⁰⁶⁵⁷ is an apocalyptic number.

It is an amenable number.

550657 is a deficient number, since it is larger than the sum of its proper divisors (1).

550657 is an equidigital number, since it uses as much as digits as its factorization.

550657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5250, while the sum is 28.

The square root of 550657 is about 742.0626658174. The cubic root of 550657 is about 81.9647379618.

The spelling of 550657 in words is "five hundred fifty thousand, six hundred fifty-seven".