545801 has 4 divisors (see below), whose sum is σ = 548100. Its totient is φ = 543504.

The previous prime is 545791. The next prime is 545827. The reversal of 545801 is 108545.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 319225 + 226576 = 565^2 + 476^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-545801 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 545801.

It is not an unprimeable number, because it can be changed into a prime (595801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 746 + ... + 1283.

It is an arithmetic number, because the mean of its divisors is an integer number (137025).

2⁵⁴⁵⁸⁰¹ is an apocalyptic number.

It is an amenable number.

545801 is a deficient number, since it is larger than the sum of its proper divisors (2299).

545801 is a wasteful number, since it uses less digits than its factorization.

545801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2298.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 545801 is about 738.7834594792. The cubic root of 545801 is about 81.7230893353.

The spelling of 545801 in words is "five hundred forty-five thousand, eight hundred one".