545550569 has 2 divisors, whose sum is σ = 545550570. Its totient is φ = 545550568.

The previous prime is 545550563. The next prime is 545550623. The reversal of 545550569 is 965055545.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 417589225 + 127961344 = 20435^2 + 11312^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-545550569 is a prime.

It is a super-2 number, since 2×545550569² = 595250846672447522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (545550563) 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, 272775284 + 272775285.

It is an arithmetic number, because the mean of its divisors is an integer number (272775285).

Almost surely, 2^545550569 is an apocalyptic number.

It is an amenable number.

545550569 is a deficient number, since it is larger than the sum of its proper divisors (1).

545550569 is an equidigital number, since it uses as much as digits as its factorization.

545550569 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 675000, while the sum is 44.

The square root of 545550569 is about 23357.0239756695. The cubic root of 545550569 is about 817.1058836524.

The spelling of 545550569 in words is "five hundred forty-five million, five hundred fifty thousand, five hundred sixty-nine".