545099 has 4 divisors (see below), whose sum is σ = 548064. Its totient is φ = 542136.

The previous prime is 545093. The next prime is 545117. The reversal of 545099 is 990545.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 990545 = 5 ⋅198109.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-545099 is a prime.

It is an Ulam 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 (545093) 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, 1187 + ... + 1580.

It is an arithmetic number, because the mean of its divisors is an integer number (137016).

2⁵⁴⁵⁰⁹⁹ is an apocalyptic number.

545099 is a deficient number, since it is larger than the sum of its proper divisors (2965).

545099 is a wasteful number, since it uses less digits than its factorization.

545099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2964.

The product of its (nonzero) digits is 8100, while the sum is 32.

The square root of 545099 is about 738.3082012276. The cubic root of 545099 is about 81.6880373523.

The spelling of 545099 in words is "five hundred forty-five thousand, ninety-nine".