101597621 has 2 divisors, whose sum is σ = 101597622. Its totient is φ = 101597620.

The previous prime is 101597611. The next prime is 101597641. The reversal of 101597621 is 126795101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101404900 + 192721 = 10070^2 + 439^2 .

It is an emirp because it is prime and its reverse (126795101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 101597621 - 2²⁶ = 34488757 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101597611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50798810 + 50798811.

It is an arithmetic number, because the mean of its divisors is an integer number (50798811).

Almost surely, 2^101597621 is an apocalyptic number.

It is an amenable number.

101597621 is a deficient number, since it is larger than the sum of its proper divisors (1).

101597621 is an equidigital number, since it uses as much as digits as its factorization.

101597621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 32.

The square root of 101597621 is about 10079.5645243235. The cubic root of 101597621 is about 466.6176687218.

The spelling of 101597621 in words is "one hundred one million, five hundred ninety-seven thousand, six hundred twenty-one".