545531636 has 24 divisors (see below), whose sum is σ = 1028975304. Its totient is φ = 251573760.

The previous prime is 545531633. The next prime is 545531659. The reversal of 545531636 is 636135545.

It can be written as a sum of positive squares in 4 ways, for example, as 28900 + 545502736 = 170^2 + 23356^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 545531636.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545531633) 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 7 ways as a sum of consecutive naturals, for example, 70856 + ... + 78176.

It is an arithmetic number, because the mean of its divisors is an integer number (42873971).

Almost surely, 2^545531636 is an apocalyptic number.

It is an amenable number.

545531636 is a deficient number, since it is larger than the sum of its proper divisors (483443668).

545531636 is a wasteful number, since it uses less digits than its factorization.

545531636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8771 (or 8769 counting only the distinct ones).

The product of its digits is 162000, while the sum is 38.

The square root of 545531636 is about 23356.6186765122. The cubic root of 545531636 is about 817.0964311558.

The spelling of 545531636 in words is "five hundred forty-five million, five hundred thirty-one thousand, six hundred thirty-six".