32257091 has 4 divisors (see below), whose sum is σ = 32326632. Its totient is φ = 32187552.

The previous prime is 32257067. The next prime is 32257097. The reversal of 32257091 is 19075223.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 32257091 - 2¹⁴ = 32240707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32257097) 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, 34070 + ... + 35003.

It is an arithmetic number, because the mean of its divisors is an integer number (8081658).

Almost surely, 2^32257091 is an apocalyptic number.

32257091 is a deficient number, since it is larger than the sum of its proper divisors (69541).

32257091 is an equidigital number, since it uses as much as digits as its factorization.

32257091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69540.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 32257091 is about 5679.5326392231. The cubic root of 32257091 is about 318.3281655061.

The spelling of 32257091 in words is "thirty-two million, two hundred fifty-seven thousand, ninety-one".