550542557 has 2 divisors, whose sum is σ = 550542558. Its totient is φ = 550542556.

The previous prime is 550542539. The next prime is 550542581. The reversal of 550542557 is 755245055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 376592836 + 173949721 = 19406^2 + 13189^2 .

It is a cyclic number.

It is not a de Polignac number, because 550542557 - 2¹⁴ = 550526173 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 550542557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (550542457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275271278 + 275271279.

It is an arithmetic number, because the mean of its divisors is an integer number (275271279).

Almost surely, 2^550542557 is an apocalyptic number.

It is an amenable number.

550542557 is a deficient number, since it is larger than the sum of its proper divisors (1).

550542557 is an equidigital number, since it uses as much as digits as its factorization.

550542557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 175000, while the sum is 38.

The square root of 550542557 is about 23463.6433019256. The cubic root of 550542557 is about 819.5905932671.

The spelling of 550542557 in words is "five hundred fifty million, five hundred forty-two thousand, five hundred fifty-seven".