545149 has 4 divisors (see below), whose sum is σ = 594720. Its totient is φ = 495580.

The previous prime is 545143. The next prime is 545161. The reversal of 545149 is 941545.

545149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 545149 - 2³ = 545141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545141) 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, 24769 + ... + 24790.

It is an arithmetic number, because the mean of its divisors is an integer number (148680).

2⁵⁴⁵¹⁴⁹ is an apocalyptic number.

It is an amenable number.

545149 is a deficient number, since it is larger than the sum of its proper divisors (49571).

545149 is a wasteful number, since it uses less digits than its factorization.

545149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49570.

The product of its digits is 3600, while the sum is 28.

The square root of 545149 is about 738.3420616489. The cubic root of 545149 is about 81.6905349273.

It can be divided in two parts, 5 and 45149, that added together give a palindrome (45154).

The spelling of 545149 in words is "five hundred forty-five thousand, one hundred forty-nine".