531643089 has 8 divisors (see below), whose sum is σ = 715482720. Its totient is φ = 351116096.

The previous prime is 531643081. The next prime is 531643097. The reversal of 531643089 is 980346135.

It is an interprime number because it is at equal distance from previous prime (531643081) and next prime (531643097).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 531643089 - 2³ = 531643081 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (531643081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 827784 + ... + 828425.

It is an arithmetic number, because the mean of its divisors is an integer number (89435340).

Almost surely, 2^531643089 is an apocalyptic number.

It is an amenable number.

531643089 is a deficient number, since it is larger than the sum of its proper divisors (183839631).

531643089 is a wasteful number, since it uses less digits than its factorization.

531643089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1656319.

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 531643089 is about 23057.3868640833. The cubic root of 531643089 is about 810.1026588373.

The spelling of 531643089 in words is "five hundred thirty-one million, six hundred forty-three thousand, eighty-nine".