201401797 has 2 divisors, whose sum is σ = 201401798. Its totient is φ = 201401796.

The previous prime is 201401789. The next prime is 201401803. The reversal of 201401797 is 797104102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201242596 + 159201 = 14186^2 + 399^2 .

It is a cyclic number.

It is not a de Polignac number, because 201401797 - 2³ = 201401789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201401297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100700898 + 100700899.

It is an arithmetic number, because the mean of its divisors is an integer number (100700899).

Almost surely, 2^201401797 is an apocalyptic number.

It is an amenable number.

201401797 is a deficient number, since it is larger than the sum of its proper divisors (1).

201401797 is an equidigital number, since it uses as much as digits as its factorization.

201401797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528, while the sum is 31.

The square root of 201401797 is about 14191.6100918818. The cubic root of 201401797 is about 586.1666610030.

Adding to 201401797 its reverse (797104102), we get a palindrome (998505899).

The spelling of 201401797 in words is "two hundred one million, four hundred one thousand, seven hundred ninety-seven".