531012565 has 16 divisors (see below), whose sum is σ = 650291328. Its totient is φ = 416118976.

The previous prime is 531012563. The next prime is 531012571. The reversal of 531012565 is 565210135.

531012565 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 531012565 - 2¹ = 531012563 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531012563) 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 15 ways as a sum of consecutive naturals, for example, 217944 + ... + 220366.

It is an arithmetic number, because the mean of its divisors is an integer number (40643208).

Almost surely, 2^531012565 is an apocalyptic number.

It is an amenable number.

531012565 is a deficient number, since it is larger than the sum of its proper divisors (119278763).

531012565 is a wasteful number, since it uses less digits than its factorization.

531012565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3308.

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 531012565 is about 23043.7098792707. The cubic root of 531012565 is about 809.7822739506.

The spelling of 531012565 in words is "five hundred thirty-one million, twelve thousand, five hundred sixty-five".