500545091 has 4 divisors (see below), whose sum is σ = 509989392. Its totient is φ = 491100792.

The previous prime is 500545081. The next prime is 500545099. The reversal of 500545091 is 190545005.

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

It is a cyclic number.

It is not a de Polignac number, because 500545091 - 2¹⁰ = 500544067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (500545099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4722071 + ... + 4722176.

It is an arithmetic number, because the mean of its divisors is an integer number (127497348).

Almost surely, 2^500545091 is an apocalyptic number.

500545091 is a deficient number, since it is larger than the sum of its proper divisors (9444301).

500545091 is an equidigital number, since it uses as much as digits as its factorization.

500545091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9444300.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 500545091 is about 22372.8650601571. The cubic root of 500545091 is about 793.9888472442.

The spelling of 500545091 in words is "five hundred million, five hundred forty-five thousand, ninety-one".