531852221 has 4 divisors (see below), whose sum is σ = 535734492. Its totient is φ = 527969952.

The previous prime is 531852193. The next prime is 531852227. The reversal of 531852221 is 122258135.

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 286929721 + 244922500 = 16939^2 + 15650^2 .

It is a cyclic number.

It is not a de Polignac number, because 531852221 - 2¹⁰ = 531851197 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 (531852227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1940930 + ... + 1941203.

It is an arithmetic number, because the mean of its divisors is an integer number (133933623).

Almost surely, 2^531852221 is an apocalyptic number.

It is an amenable number.

531852221 is a deficient number, since it is larger than the sum of its proper divisors (3882271).

531852221 is a wasteful number, since it uses less digits than its factorization.

531852221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3882270.

The product of its digits is 4800, while the sum is 29.

The square root of 531852221 is about 23061.9214507378. The cubic root of 531852221 is about 810.2088680486.

The spelling of 531852221 in words is "five hundred thirty-one million, eight hundred fifty-two thousand, two hundred twenty-one".