545105 has 24 divisors (see below), whose sum is σ = 775656. Its totient is φ = 366080.

The previous prime is 545093. The next prime is 545117. The reversal of 545105 is 501545.

545105 = 171² + 172² + ... + 187².

It is an interprime number because it is at equal distance from previous prime (545093) and next prime (545117).

It can be written as a sum of positive squares in 4 ways, for example, as 165649 + 379456 = 407^2 + 616^2 .

It is not a de Polignac number, because 545105 - 2⁴ = 545089 is a prime.

It is a super-2 number, since 2×545105² = 594278922050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 12.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10259 + ... + 10311.

It is an arithmetic number, because the mean of its divisors is an integer number (32319).

2⁵⁴⁵¹⁰⁵ is an apocalyptic number.

545105 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

545105 is a deficient number, since it is larger than the sum of its proper divisors (230551).

545105 is a wasteful number, since it uses less digits than its factorization.

545105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97 (or 86 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 545105 is about 738.3122645602. The cubic root of 545105 is about 81.6883370693.

The spelling of 545105 in words is "five hundred forty-five thousand, one hundred five".