545631904 has 24 divisors (see below), whose sum is σ = 1075546080. Its totient is φ = 272477376.

The previous prime is 545631901. The next prime is 545631923. The reversal of 545631904 is 409136545.

It is not an unprimeable number, because it can be changed into a prime (545631901) 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 3 ways as a sum of consecutive naturals, for example, 16687 + ... + 37009.

It is an arithmetic number, because the mean of its divisors is an integer number (44814420).

Almost surely, 2^545631904 is an apocalyptic number.

It is an amenable number.

545631904 is a deficient number, since it is larger than the sum of its proper divisors (529914176).

545631904 is a wasteful number, since it uses less digits than its factorization.

545631904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21172 (or 21164 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 545631904 is about 23358.7650358490. The cubic root of 545631904 is about 817.1464885070.

It can be divided in two parts, 545631 and 904, that added together give a triangular number (546535 = T₁₀₄₅).

The spelling of 545631904 in words is "five hundred forty-five million, six hundred thirty-one thousand, nine hundred four".