545597591 has 12 divisors (see below), whose sum is σ = 685379856. Its totient is φ = 425140320.

The previous prime is 545597587. The next prime is 545597593. The reversal of 545597591 is 195795545.

It is not a de Polignac number, because 545597591 - 2² = 545597587 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545597593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 321230 + ... + 322923.

It is an arithmetic number, because the mean of its divisors is an integer number (57114988).

Almost surely, 2^545597591 is an apocalyptic number.

545597591 is a deficient number, since it is larger than the sum of its proper divisors (139782265).

545597591 is a wasteful number, since it uses less digits than its factorization.

545597591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644182 (or 644171 counting only the distinct ones).

The product of its digits is 1417500, while the sum is 50.

The square root of 545597591 is about 23358.0305462597. The cubic root of 545597591 is about 817.1293589275.

The spelling of 545597591 in words is "five hundred forty-five million, five hundred ninety-seven thousand, five hundred ninety-one".