545150561 has 2 divisors, whose sum is σ = 545150562. Its totient is φ = 545150560.

The previous prime is 545150521. The next prime is 545150569. The reversal of 545150561 is 165051545.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 406264336 + 138886225 = 20156^2 + 11785^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-545150561 is a prime.

It is a super-2 number, since 2×545150561² = 594378268317229442, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (545150569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272575280 + 272575281.

It is an arithmetic number, because the mean of its divisors is an integer number (272575281).

Almost surely, 2^545150561 is an apocalyptic number.

It is an amenable number.

545150561 is a deficient number, since it is larger than the sum of its proper divisors (1).

545150561 is an equidigital number, since it uses as much as digits as its factorization.

545150561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15000, while the sum is 32.

The square root of 545150561 is about 23348.4594995045. The cubic root of 545150561 is about 816.9061289915.

The spelling of 545150561 in words is "five hundred forty-five million, one hundred fifty thousand, five hundred sixty-one".