532631221 has 4 divisors (see below), whose sum is σ = 532703500. Its totient is φ = 532558944.

The previous prime is 532631201. The next prime is 532631249. The reversal of 532631221 is 122136235.

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 212722225 + 319908996 = 14585^2 + 17886^2 .

It is a cyclic number.

It is not a de Polignac number, because 532631221 - 2¹⁵ = 532598453 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 (532631201) 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, 23646 + ... + 40303.

It is an arithmetic number, because the mean of its divisors is an integer number (133175875).

Almost surely, 2^532631221 is an apocalyptic number.

It is an amenable number.

532631221 is a deficient number, since it is larger than the sum of its proper divisors (72279).

532631221 is an equidigital number, since it uses as much as digits as its factorization.

532631221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72278.

The product of its digits is 2160, while the sum is 25.

The square root of 532631221 is about 23078.8045834268. The cubic root of 532631221 is about 810.6042440481.

Adding to 532631221 its reverse (122136235), we get a palindrome (654767456).

The spelling of 532631221 in words is "five hundred thirty-two million, six hundred thirty-one thousand, two hundred twenty-one".