545955591 has 8 divisors (see below), whose sum is σ = 729775984. Its totient is φ = 363052800.

The previous prime is 545955569. The next prime is 545955607. The reversal of 545955591 is 195559545.

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

It is not a de Polignac number, because 545955591 - 2⁹ = 545955079 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 545955591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545955541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 228010 + ... + 230391.

It is an arithmetic number, because the mean of its divisors is an integer number (91221998).

Almost surely, 2^545955591 is an apocalyptic number.

545955591 is a deficient number, since it is larger than the sum of its proper divisors (183820393).

545955591 is a wasteful number, since it uses less digits than its factorization.

545955591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458801.

The product of its digits is 1012500, while the sum is 48.

The square root of 545955591 is about 23365.6926068970. The cubic root of 545955591 is about 817.3080427266.

The spelling of 545955591 in words is "five hundred forty-five million, nine hundred fifty-five thousand, five hundred ninety-one".