545201 has 4 divisors (see below), whose sum is σ = 546852. Its totient is φ = 543552.

The previous prime is 545189. The next prime is 545203. The reversal of 545201 is 102545.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 102545 = 5 ⋅20509.

It can be written as a sum of positive squares in 2 ways, for example, as 384400 + 160801 = 620^2 + 401^2 .

It is a cyclic number.

It is not a de Polignac number, because 545201 - 2¹⁰ = 544177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 545201.

It is not an unprimeable number, because it can be changed into a prime (545203) 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, 140 + ... + 1053.

It is an arithmetic number, because the mean of its divisors is an integer number (136713).

2⁵⁴⁵²⁰¹ is an apocalyptic number.

It is an amenable number.

545201 is a deficient number, since it is larger than the sum of its proper divisors (1651).

545201 is a wasteful number, since it uses less digits than its factorization.

545201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1650.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 545201 is about 738.3772748399. The cubic root of 545201 is about 81.6931322434.

Adding to 545201 its reverse (102545), we get a palindrome (647746).

The spelling of 545201 in words is "five hundred forty-five thousand, two hundred one".