201594401 has 2 divisors, whose sum is σ = 201594402. Its totient is φ = 201594400.

The previous prime is 201594377. The next prime is 201594403. The reversal of 201594401 is 104495102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 180203776 + 21390625 = 13424^2 + 4625^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201594401 is a prime.

Together with 201594403, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (201594403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100797200 + 100797201.

It is an arithmetic number, because the mean of its divisors is an integer number (100797201).

Almost surely, 2^201594401 is an apocalyptic number.

It is an amenable number.

201594401 is a deficient number, since it is larger than the sum of its proper divisors (1).

201594401 is an equidigital number, since it uses as much as digits as its factorization.

201594401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 201594401 is about 14198.3943106254. The cubic root of 201594401 is about 586.3534552216.

The spelling of 201594401 in words is "two hundred one million, five hundred ninety-four thousand, four hundred one".