545541 has 8 divisors (see below), whose sum is σ = 744480. Its totient is φ = 355152.

The previous prime is 545533. The next prime is 545543. The reversal of 545541 is 145545.

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

It is not a de Polignac number, because 545541 - 2³ = 545533 is a prime.

It is a super-2 number, since 2×545541² = 595229965362, which contains 22 as substring.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 545541.

It is not an unprimeable number, because it can be changed into a prime (545543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1986 + ... + 2243.

It is an arithmetic number, because the mean of its divisors is an integer number (93060).

2⁵⁴⁵⁵⁴¹ is an apocalyptic number.

It is an amenable number.

545541 is a deficient number, since it is larger than the sum of its proper divisors (198939).

545541 is a wasteful number, since it uses less digits than its factorization.

545541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4275.

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

The square root of 545541 is about 738.6074735609. The cubic root of 545541 is about 81.7101106257.

The spelling of 545541 in words is "five hundred forty-five thousand, five hundred forty-one".