550278447457 has 2 divisors, whose sum is σ = 550278447458. Its totient is φ = 550278447456.

The previous prime is 550278447449. The next prime is 550278447461. The reversal of 550278447457 is 754744872055.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 447144978721 + 103133468736 = 668689^2 + 321144^2 .

It is a cyclic number.

It is not a de Polignac number, because 550278447457 - 2³ = 550278447449 is a prime.

It is not a weakly prime, because it can be changed into another prime (550278447857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275139223728 + 275139223729.

It is an arithmetic number, because the mean of its divisors is an integer number (275139223729).

Almost surely, 2^550278447457 is an apocalyptic number.

It is an amenable number.

550278447457 is a deficient number, since it is larger than the sum of its proper divisors (1).

550278447457 is an equidigital number, since it uses as much as digits as its factorization.

550278447457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43904000, while the sum is 58.

The spelling of 550278447457 in words is "five hundred fifty billion, two hundred seventy-eight million, four hundred forty-seven thousand, four hundred fifty-seven".