531544634 has 16 divisors (see below), whose sum is σ = 814097088. Its totient is φ = 260226912.

The previous prime is 531544633. The next prime is 531544669. The reversal of 531544634 is 436445135.

It is a junction number, because it is equal to n+sod(n) for n = 531544594 and 531544603.

It is not an unprimeable number, because it can be changed into a prime (531544633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10502 + ... + 34254.

It is an arithmetic number, because the mean of its divisors is an integer number (50881068).

Almost surely, 2^531544634 is an apocalyptic number.

531544634 is a deficient number, since it is larger than the sum of its proper divisors (282552454).

531544634 is a wasteful number, since it uses less digits than its factorization.

531544634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23989.

The product of its digits is 86400, while the sum is 35.

The square root of 531544634 is about 23055.2517661378. The cubic root of 531544634 is about 810.0526481046.

Adding to 531544634 its reverse (436445135), we get a palindrome (967989769).

The spelling of 531544634 in words is "five hundred thirty-one million, five hundred forty-four thousand, six hundred thirty-four".