545917 has 2 divisors, whose sum is σ = 545918. Its totient is φ = 545916.

The previous prime is 545911. The next prime is 545929. The reversal of 545917 is 719545.

545917 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 376996 + 168921 = 614^2 + 411^2 .

It is a cyclic number.

It is not a de Polignac number, because 545917 - 2⁷ = 545789 is a prime.

545917 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (545911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272958 + 272959.

It is an arithmetic number, because the mean of its divisors is an integer number (272959).

2⁵⁴⁵⁹¹⁷ is an apocalyptic number.

It is an amenable number.

545917 is a deficient number, since it is larger than the sum of its proper divisors (1).

545917 is an equidigital number, since it uses as much as digits as its factorization.

545917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6300, while the sum is 31.

The square root of 545917 is about 738.8619627508. The cubic root of 545917 is about 81.7288785069.

It can be divided in two parts, 5459 and 17, that added together give a square (5476 = 74²).

The spelling of 545917 in words is "five hundred forty-five thousand, nine hundred seventeen".