531005265 has 24 divisors (see below), whose sum is σ = 1051896768. Its totient is φ = 242745120.

The previous prime is 531005221. The next prime is 531005269. The reversal of 531005265 is 562500135.

It is not a de Polignac number, because 531005265 - 2¹¹ = 531003217 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (531005269) 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 23 ways as a sum of consecutive naturals, for example, 842551 + ... + 843180.

It is an arithmetic number, because the mean of its divisors is an integer number (43829032).

Almost surely, 2^531005265 is an apocalyptic number.

It is an amenable number.

531005265 is a deficient number, since it is larger than the sum of its proper divisors (520891503).

531005265 is a wasteful number, since it uses less digits than its factorization.

531005265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1685749 (or 1685746 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 531005265 is about 23043.5514840920. The cubic root of 531005265 is about 809.7785631548.

The spelling of 531005265 in words is "five hundred thirty-one million, five thousand, two hundred sixty-five".