531717481 has 3 divisors (see below), whose sum is σ = 531740541. Its totient is φ = 531694422.

The previous prime is 531717463. The next prime is 531717497. The reversal of 531717481 is 184717135.

The square root of 531717481 is 23059.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 531717481 - 2⁷ = 531717353 is a prime.

It is a super-2 number, since 2×531717481² = 565446959201970722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 531717481.

It is not an unprimeable number, because it can be changed into a prime (531717281) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 11530 + ... + 34588.

It is an arithmetic number, because the mean of its divisors is an integer number (177246847).

Almost surely, 2^531717481 is an apocalyptic number.

531717481 is the 23059-th square number.

531717481 is the 11530-th centered octagonal number.

It is an amenable number.

531717481 is a deficient number, since it is larger than the sum of its proper divisors (23060).

531717481 is an frugal number, since it uses more digits than its factorization.

531717481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46118 (or 23059 counting only the distinct ones).

The product of its digits is 23520, while the sum is 37.

The cubic root of 531717481 is about 810.1404425482.

The spelling of 531717481 in words is "five hundred thirty-one million, seven hundred seventeen thousand, four hundred eighty-one".