545855269 has 2 divisors, whose sum is σ = 545855270. Its totient is φ = 545855268.

The previous prime is 545855249. The next prime is 545855279. The reversal of 545855269 is 962558545.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 522671044 + 23184225 = 22862^2 + 4815^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-545855269 is a prime.

It is a super-2 number, since 2×545855269² = 595915949390124722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (545855249) 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, 272927634 + 272927635.

It is an arithmetic number, because the mean of its divisors is an integer number (272927635).

Almost surely, 2^545855269 is an apocalyptic number.

It is an amenable number.

545855269 is a deficient number, since it is larger than the sum of its proper divisors (1).

545855269 is an equidigital number, since it uses as much as digits as its factorization.

545855269 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160000, while the sum is 49.

The square root of 545855269 is about 23363.5457283350. The cubic root of 545855269 is about 817.2579782149.

The spelling of 545855269 in words is "five hundred forty-five million, eight hundred fifty-five thousand, two hundred sixty-nine".