545899069 has 2 divisors, whose sum is σ = 545899070. Its totient is φ = 545899068.

The previous prime is 545899021. The next prime is 545899129. The reversal of 545899069 is 960998545.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 518472900 + 27426169 = 22770^2 + 5237^2 .

It is a cyclic number.

It is not a de Polignac number, because 545899069 - 2²¹ = 543801917 is a prime.

It is a super-2 number, since 2×545899069² = 596011587070133522, 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 (545899969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272949534 + 272949535.

It is an arithmetic number, because the mean of its divisors is an integer number (272949535).

Almost surely, 2^545899069 is an apocalyptic number.

It is an amenable number.

545899069 is a deficient number, since it is larger than the sum of its proper divisors (1).

545899069 is an equidigital number, since it uses as much as digits as its factorization.

545899069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3499200, while the sum is 55.

The square root of 545899069 is about 23364.4830672540. The cubic root of 545899069 is about 817.2798368430.

The spelling of 545899069 in words is "five hundred forty-five million, eight hundred ninety-nine thousand, sixty-nine".