550916257 has 2 divisors, whose sum is σ = 550916258. Its totient is φ = 550916256.

The previous prime is 550916237. The next prime is 550916269. The reversal of 550916257 is 752619055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 288184576 + 262731681 = 16976^2 + 16209^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-550916257 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (550916237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275458128 + 275458129.

It is an arithmetic number, because the mean of its divisors is an integer number (275458129).

Almost surely, 2^550916257 is an apocalyptic number.

It is an amenable number.

550916257 is a deficient number, since it is larger than the sum of its proper divisors (1).

550916257 is an equidigital number, since it uses as much as digits as its factorization.

550916257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 94500, while the sum is 40.

The square root of 550916257 is about 23471.6053349574. The cubic root of 550916257 is about 819.7759932435.

The spelling of 550916257 in words is "five hundred fifty million, nine hundred sixteen thousand, two hundred fifty-seven".