32000491 has 2 divisors, whose sum is σ = 32000492. Its totient is φ = 32000490.

The previous prime is 32000489. The next prime is 32000513. The reversal of 32000491 is 19400023.

It is a weak prime.

It is an emirp because it is prime and its reverse (19400023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 32000491 - 2¹ = 32000489 is a prime.

Together with 32000489, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (32000411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16000245 + 16000246.

It is an arithmetic number, because the mean of its divisors is an integer number (16000246).

Almost surely, 2^32000491 is an apocalyptic number.

32000491 is a deficient number, since it is larger than the sum of its proper divisors (1).

32000491 is an equidigital number, since it uses as much as digits as its factorization.

32000491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 32000491 is about 5656.8976480046. The cubic root of 32000491 is about 317.4818341643.

The spelling of 32000491 in words is "thirty-two million, four hundred ninety-one", and thus it is an aban number.