531089 has 4 divisors (see below), whose sum is σ = 571956. Its totient is φ = 490224.

The previous prime is 531079. The next prime is 531101. The reversal of 531089 is 980135.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 350464 + 180625 = 592^2 + 425^2 .

It is a cyclic number.

It is not a de Polignac number, because 531089 - 2⁸ = 530833 is a prime.

It is a Duffinian number.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20414 + ... + 20439.

It is an arithmetic number, because the mean of its divisors is an integer number (142989).

2⁵³¹⁰⁸⁹ is an apocalyptic number.

It is an amenable number.

531089 is a deficient number, since it is larger than the sum of its proper divisors (40867).

531089 is a wasteful number, since it uses less digits than its factorization.

531089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40866.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 531089 is about 728.7585333977. The cubic root of 531089 is about 80.9821125975.

The spelling of 531089 in words is "five hundred thirty-one thousand, eighty-nine".