532220421 has 4 divisors (see below), whose sum is σ = 709627232. Its totient is φ = 354813612.

The previous prime is 532220407. The next prime is 532220449. The reversal of 532220421 is 124022235.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 532220421 - 2⁵ = 532220389 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 (532220471) 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, 88703401 + ... + 88703406.

It is an arithmetic number, because the mean of its divisors is an integer number (177406808).

Almost surely, 2^532220421 is an apocalyptic number.

It is an amenable number.

532220421 is a deficient number, since it is larger than the sum of its proper divisors (177406811).

532220421 is a wasteful number, since it uses less digits than its factorization.

532220421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177406810.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 532220421 is about 23069.9029256735. The cubic root of 532220421 is about 810.3957934626.

Adding to 532220421 its reverse (124022235), we get a palindrome (656242656).

The spelling of 532220421 in words is "five hundred thirty-two million, two hundred twenty thousand, four hundred twenty-one".