201927001 has 2 divisors, whose sum is σ = 201927002. Its totient is φ = 201927000.

The previous prime is 201926999. The next prime is 201927007. The reversal of 201927001 is 100729102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150087001 + 51840000 = 12251^2 + 7200^2 .

It is a cyclic number.

It is not a de Polignac number, because 201927001 - 2¹ = 201926999 is a prime.

Together with 201926999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (201927007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100963500 + 100963501.

It is an arithmetic number, because the mean of its divisors is an integer number (100963501).

Almost surely, 2^201927001 is an apocalyptic number.

It is an amenable number.

201927001 is a deficient number, since it is larger than the sum of its proper divisors (1).

201927001 is an equidigital number, since it uses as much as digits as its factorization.

201927001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 201927001 is about 14210.1020756362. The cubic root of 201927001 is about 586.6757426210.

The spelling of 201927001 in words is "two hundred one million, nine hundred twenty-seven thousand, one".