531052213 has 4 divisors (see below), whose sum is σ = 544004748. Its totient is φ = 518099680.

The previous prime is 531052189. The next prime is 531052219. The reversal of 531052213 is 312250135.

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 311804964 + 219247249 = 17658^2 + 14807^2 .

It is a cyclic number.

It is not a de Polignac number, because 531052213 - 2⁹ = 531051701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531052219) 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 3 ways as a sum of consecutive naturals, for example, 6476206 + ... + 6476287.

It is an arithmetic number, because the mean of its divisors is an integer number (136001187).

Almost surely, 2^531052213 is an apocalyptic number.

It is an amenable number.

531052213 is a deficient number, since it is larger than the sum of its proper divisors (12952535).

531052213 is a wasteful number, since it uses less digits than its factorization.

531052213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12952534.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 531052213 is about 23044.5701413587. The cubic root of 531052213 is about 809.8024275532.

The spelling of 531052213 in words is "five hundred thirty-one million, fifty-two thousand, two hundred thirteen".