550331549 has 2 divisors, whose sum is σ = 550331550. Its totient is φ = 550331548.

The previous prime is 550331539. The next prime is 550331581. The reversal of 550331549 is 945133055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 539075524 + 11256025 = 23218^2 + 3355^2 .

It is a cyclic number.

It is not a de Polignac number, because 550331549 - 2²⁰ = 549282973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (550331519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275165774 + 275165775.

It is an arithmetic number, because the mean of its divisors is an integer number (275165775).

Almost surely, 2^550331549 is an apocalyptic number.

It is an amenable number.

550331549 is a deficient number, since it is larger than the sum of its proper divisors (1).

550331549 is an equidigital number, since it uses as much as digits as its factorization.

550331549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40500, while the sum is 35.

The square root of 550331549 is about 23459.1463825946. The cubic root of 550331549 is about 819.4858709535.

The spelling of 550331549 in words is "five hundred fifty million, three hundred thirty-one thousand, five hundred forty-nine".