545451 has 8 divisors (see below), whose sum is σ = 734160. Its totient is φ = 360192.

The previous prime is 545449. The next prime is 545473. The reversal of 545451 is 154545.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 545451 - 2¹ = 545449 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (545551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 466 + ... + 1143.

It is an arithmetic number, because the mean of its divisors is an integer number (91770).

2⁵⁴⁵⁴⁵¹ is an apocalyptic number.

545451 is a deficient number, since it is larger than the sum of its proper divisors (188709).

545451 is a wasteful number, since it uses less digits than its factorization.

545451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1725.

The product of its digits is 2000, while the sum is 24.

The square root of 545451 is about 738.5465455880. The cubic root of 545451 is about 81.7056170347.

Adding to 545451 its reverse (154545), we get a palindrome (699996).

The spelling of 545451 in words is "five hundred forty-five thousand, four hundred fifty-one".