32321491 has 2 divisors, whose sum is σ = 32321492. Its totient is φ = 32321490.

The previous prime is 32321459. The next prime is 32321501. The reversal of 32321491 is 19412323.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 32321491 - 2⁵ = 32321459 is a prime.

It is not a weakly prime, because it can be changed into another prime (32321411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16160745 + 16160746.

It is an arithmetic number, because the mean of its divisors is an integer number (16160746).

Almost surely, 2^32321491 is an apocalyptic number.

32321491 is a deficient number, since it is larger than the sum of its proper divisors (1).

32321491 is an equidigital number, since it uses as much as digits as its factorization.

32321491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 25.

The square root of 32321491 is about 5685.1992929008. The cubic root of 32321491 is about 318.5398678599.

The spelling of 32321491 in words is "thirty-two million, three hundred twenty-one thousand, four hundred ninety-one".