545633 has 4 divisors (see below), whose sum is σ = 595248. Its totient is φ = 496020.

The previous prime is 545621. The next prime is 545641. The reversal of 545633 is 336545.

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 545633 - 2⁴ = 545617 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (545663) 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, 24791 + ... + 24812.

It is an arithmetic number, because the mean of its divisors is an integer number (148812).

2⁵⁴⁵⁶³³ is an apocalyptic number.

It is an amenable number.

545633 is a deficient number, since it is larger than the sum of its proper divisors (49615).

545633 is a wasteful number, since it uses less digits than its factorization.

545633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49614.

The product of its digits is 5400, while the sum is 26.

The square root of 545633 is about 738.6697502944. The cubic root of 545633 is about 81.7147035635.

The spelling of 545633 in words is "five hundred forty-five thousand, six hundred thirty-three".