545219069 has 2 divisors, whose sum is σ = 545219070. Its totient is φ = 545219068.

The previous prime is 545219047. The next prime is 545219083. The reversal of 545219069 is 960912545.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 435765625 + 109453444 = 20875^2 + 10462^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-545219069 is a prime.

It is a super-2 number, since 2×545219069² = 594527666402453522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (545219009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272609534 + 272609535.

It is an arithmetic number, because the mean of its divisors is an integer number (272609535).

Almost surely, 2^545219069 is an apocalyptic number.

It is an amenable number.

545219069 is a deficient number, since it is larger than the sum of its proper divisors (1).

545219069 is an equidigital number, since it uses as much as digits as its factorization.

545219069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97200, while the sum is 41.

The square root of 545219069 is about 23349.9265309337. The cubic root of 545219069 is about 816.9403472209.

The spelling of 545219069 in words is "five hundred forty-five million, two hundred nineteen thousand, sixty-nine".