550244493857 has 2 divisors, whose sum is σ = 550244493858. Its totient is φ = 550244493856.

The previous prime is 550244493853. The next prime is 550244493893. The reversal of 550244493857 is 758394442055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 504098580001 + 46145913856 = 709999^2 + 214816^2 .

It is a cyclic number.

It is not a de Polignac number, because 550244493857 - 2² = 550244493853 is a prime.

It is a super-2 number, since 2×550244493857² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (550244493853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275122246928 + 275122246929.

It is an arithmetic number, because the mean of its divisors is an integer number (275122246929).

Almost surely, 2^550244493857 is an apocalyptic number.

It is an amenable number.

550244493857 is a deficient number, since it is larger than the sum of its proper divisors (1).

550244493857 is an equidigital number, since it uses as much as digits as its factorization.

550244493857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192000, while the sum is 56.

The spelling of 550244493857 in words is "five hundred fifty billion, two hundred forty-four million, four hundred ninety-three thousand, eight hundred fifty-seven".