531636045 has 32 divisors (see below), whose sum is σ = 873110784. Its totient is φ = 276134400.

The previous prime is 531636031. The next prime is 531636067. The reversal of 531636045 is 540636135.

It is not a de Polignac number, because 531636045 - 2¹⁰ = 531635021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 531635997 and 531636015.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 91425 + ... + 97065.

It is an arithmetic number, because the mean of its divisors is an integer number (27284712).

Almost surely, 2^531636045 is an apocalyptic number.

It is an amenable number.

531636045 is a deficient number, since it is larger than the sum of its proper divisors (341474739).

531636045 is a wasteful number, since it uses less digits than its factorization.

531636045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5813.

The product of its (nonzero) digits is 32400, while the sum is 33.

The square root of 531636045 is about 23057.2341142644. The cubic root of 531636045 is about 810.0990810057.

The spelling of 531636045 in words is "five hundred thirty-one million, six hundred thirty-six thousand, forty-five".