20895101 has 2 divisors, whose sum is σ = 20895102. Its totient is φ = 20895100.

The previous prime is 20895097. The next prime is 20895107. The reversal of 20895101 is 10159802.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20884900 + 10201 = 4570^2 + 101^2 .

It is a cyclic number.

It is not a de Polignac number, because 20895101 - 2² = 20895097 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20895107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10447550 + 10447551.

It is an arithmetic number, because the mean of its divisors is an integer number (10447551).

Almost surely, 2^20895101 is an apocalyptic number.

It is an amenable number.

20895101 is a deficient number, since it is larger than the sum of its proper divisors (1).

20895101 is an equidigital number, since it uses as much as digits as its factorization.

20895101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 20895101 is about 4571.1159468996. The cubic root of 20895101 is about 275.4322722218.

The spelling of 20895101 in words is "twenty million, eight hundred ninety-five thousand, one hundred one".