201001597 has 2 divisors, whose sum is σ = 201001598. Its totient is φ = 201001596.

The previous prime is 201001583. The next prime is 201001609. The reversal of 201001597 is 795100102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 200675556 + 326041 = 14166^2 + 571^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201001597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201001547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100500798 + 100500799.

It is an arithmetic number, because the mean of its divisors is an integer number (100500799).

Almost surely, 2^201001597 is an apocalyptic number.

It is an amenable number.

201001597 is a deficient number, since it is larger than the sum of its proper divisors (1).

201001597 is an equidigital number, since it uses as much as digits as its factorization.

201001597 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 630, while the sum is 25.

The square root of 201001597 is about 14177.5032004934. The cubic root of 201001597 is about 585.7781516461.

Adding to 201001597 its reverse (795100102), we get a palindrome (996101699).

The spelling of 201001597 in words is "two hundred one million, one thousand, five hundred ninety-seven".