32055991 has 12 divisors (see below), whose sum is σ = 36290520. Its totient is φ = 28048160.

The previous prime is 32055977. The next prime is 32056001. The reversal of 32055991 is 19955023.

It is a happy number.

It is not a de Polignac number, because 32055991 - 2¹¹ = 32053943 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 (32055901) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 100965 + ... + 101281.

It is an arithmetic number, because the mean of its divisors is an integer number (3024210).

Almost surely, 2^32055991 is an apocalyptic number.

32055991 is a deficient number, since it is larger than the sum of its proper divisors (4234529).

32055991 is an equidigital number, since it uses as much as digits as its factorization.

32055991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674 (or 357 counting only the distinct ones).

The product of its (nonzero) digits is 12150, while the sum is 34.

The square root of 32055991 is about 5661.8010385389. The cubic root of 32055991 is about 317.6652695274.

The spelling of 32055991 in words is "thirty-two million, fifty-five thousand, nine hundred ninety-one".