531150165 has 48 divisors (see below), whose sum is σ = 1133129088. Its totient is φ = 224131968.

The previous prime is 531150143. The next prime is 531150173. The reversal of 531150165 is 561051135.

It is not a de Polignac number, because 531150165 - 2¹⁰ = 531149141 is a prime.

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 47 ways as a sum of consecutive naturals, for example, 60759 + ... + 68948.

It is an arithmetic number, because the mean of its divisors is an integer number (23606856).

Almost surely, 2^531150165 is an apocalyptic number.

It is an amenable number.

531150165 is an abundant number, since it is smaller than the sum of its proper divisors (601978923).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

531150165 is a wasteful number, since it uses less digits than its factorization.

531150165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129738 (or 129735 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 27.

The square root of 531150165 is about 23046.6953162487. The cubic root of 531150165 is about 809.8522135498.

The spelling of 531150165 in words is "five hundred thirty-one million, one hundred fifty thousand, one hundred sixty-five".