327975421 has 2 divisors, whose sum is σ = 327975422. Its totient is φ = 327975420.

The previous prime is 327975409. The next prime is 327975481. The reversal of 327975421 is 124579723.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 230736100 + 97239321 = 15190^2 + 9861^2 .

It is a cyclic number.

It is not a de Polignac number, because 327975421 - 2⁹ = 327974909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (327975481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163987710 + 163987711.

It is an arithmetic number, because the mean of its divisors is an integer number (163987711).

Almost surely, 2^327975421 is an apocalyptic number.

It is an amenable number.

327975421 is a deficient number, since it is larger than the sum of its proper divisors (1).

327975421 is an equidigital number, since it uses as much as digits as its factorization.

327975421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 105840, while the sum is 40.

The square root of 327975421 is about 18110.0916894421. The cubic root of 327975421 is about 689.6262212780.

The spelling of 327975421 in words is "three hundred twenty-seven million, nine hundred seventy-five thousand, four hundred twenty-one".