545151 has 4 divisors (see below), whose sum is σ = 726872. Its totient is φ = 363432.

The previous prime is 545143. The next prime is 545161. The reversal of 545151 is 151545.

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

It is not a de Polignac number, because 545151 - 2³ = 545143 is a prime.

It is a super-2 number, since 2×545151² = 594379225602, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90856 + ... + 90861.

It is an arithmetic number, because the mean of its divisors is an integer number (181718).

2⁵⁴⁵¹⁵¹ is an apocalyptic number.

545151 is a deficient number, since it is larger than the sum of its proper divisors (181721).

545151 is a wasteful number, since it uses less digits than its factorization.

545151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181720.

The product of its digits is 500, while the sum is 21.

The square root of 545151 is about 738.3434160335. The cubic root of 545151 is about 81.6906348271.

Adding to 545151 its reverse (151545), we get a palindrome (696696).

It can be divided in two parts, 545 and 151, that added together give a palindrome (696).

The spelling of 545151 in words is "five hundred forty-five thousand, one hundred fifty-one".