531515164 has 12 divisors (see below), whose sum is σ = 947701944. Its totient is φ = 260743184.

The previous prime is 531515147. The next prime is 531515167. The reversal of 531515164 is 461515135.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531515167) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1253362 + ... + 1253785.

It is an arithmetic number, because the mean of its divisors is an integer number (78975162).

Almost surely, 2^531515164 is an apocalyptic number.

It is an amenable number.

531515164 is a deficient number, since it is larger than the sum of its proper divisors (416186780).

531515164 is a wasteful number, since it uses less digits than its factorization.

531515164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2507204 (or 2507202 counting only the distinct ones).

The product of its digits is 9000, while the sum is 31.

The square root of 531515164 is about 23054.6126404240. The cubic root of 531515164 is about 810.0376774630.

The spelling of 531515164 in words is "five hundred thirty-one million, five hundred fifteen thousand, one hundred sixty-four".