201597401 has 2 divisors, whose sum is σ = 201597402. Its totient is φ = 201597400.

The previous prime is 201597379. The next prime is 201597413. The reversal of 201597401 is 104795102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102495376 + 99102025 = 10124^2 + 9955^2 .

It is a cyclic number.

It is not a de Polignac number, because 201597401 - 2⁶ = 201597337 is a prime.

It is not a weakly prime, because it can be changed into another prime (201597421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100798700 + 100798701.

It is an arithmetic number, because the mean of its divisors is an integer number (100798701).

Almost surely, 2^201597401 is an apocalyptic number.

It is an amenable number.

201597401 is a deficient number, since it is larger than the sum of its proper divisors (1).

201597401 is an equidigital number, since it uses as much as digits as its factorization.

201597401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 201597401 is about 14198.4999559813. The cubic root of 201597401 is about 586.3563637873.

The spelling of 201597401 in words is "two hundred one million, five hundred ninety-seven thousand, four hundred one".