545089 has 2 divisors, whose sum is σ = 545090. Its totient is φ = 545088.

The previous prime is 545087. The next prime is 545093. The reversal of 545089 is 980545.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 400689 + 144400 = 633^2 + 380^2 .

It is a cyclic number.

It is not a de Polignac number, because 545089 - 2¹ = 545087 is a prime.

Together with 545087, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 545089.

It is not a weakly prime, because it can be changed into another prime (545087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272544 + 272545.

It is an arithmetic number, because the mean of its divisors is an integer number (272545).

2⁵⁴⁵⁰⁸⁹ is an apocalyptic number.

It is an amenable number.

545089 is a deficient number, since it is larger than the sum of its proper divisors (1).

545089 is an equidigital number, since it uses as much as digits as its factorization.

545089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 545089 is about 738.3014289570. The cubic root of 545089 is about 81.6875378189.

The spelling of 545089 in words is "five hundred forty-five thousand, eighty-nine".