100566901 has 2 divisors, whose sum is σ = 100566902. Its totient is φ = 100566900.

The previous prime is 100566881. The next prime is 100566913. The reversal of 100566901 is 109665001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100520676 + 46225 = 10026^2 + 215^2 .

It is a cyclic number.

It is not a de Polignac number, because 100566901 - 2²⁵ = 67012469 is a prime.

It is a super-2 number, since 2×100566901² = 20227403153487602, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100566901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100566931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50283450 + 50283451.

It is an arithmetic number, because the mean of its divisors is an integer number (50283451).

Almost surely, 2^100566901 is an apocalyptic number.

It is an amenable number.

100566901 is a deficient number, since it is larger than the sum of its proper divisors (1).

100566901 is an equidigital number, since it uses as much as digits as its factorization.

100566901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 100566901 is about 10028.3049913732. The cubic root of 100566901 is about 465.0343382358.

The spelling of 100566901 in words is "one hundred million, five hundred sixty-six thousand, nine hundred one".