32056221 has 4 divisors (see below), whose sum is σ = 42741632. Its totient is φ = 21370812.

The previous prime is 32056183. The next prime is 32056229. The reversal of 32056221 is 12265023.

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 32056221 - 2¹⁰ = 32055197 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 (32056229) 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, 5342701 + ... + 5342706.

It is an arithmetic number, because the mean of its divisors is an integer number (10685408).

Almost surely, 2^32056221 is an apocalyptic number.

It is an amenable number.

32056221 is a deficient number, since it is larger than the sum of its proper divisors (10685411).

32056221 is a wasteful number, since it uses less digits than its factorization.

32056221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10685410.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 32056221 is about 5661.8213500604. The cubic root of 32056221 is about 317.6660292693. Note that the first 3 decimals are identical.

The spelling of 32056221 in words is "thirty-two million, fifty-six thousand, two hundred twenty-one".