8561101 has 2 divisors, whose sum is σ = 8561102. Its totient is φ = 8561100.

The previous prime is 8561099. The next prime is 8561107. The reversal of 8561101 is 1011658.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8555625 + 5476 = 2925^2 + 74^2 .

It is a cyclic number.

It is not a de Polignac number, because 8561101 - 2¹ = 8561099 is a prime.

Together with 8561099, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8561107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4280550 + 4280551.

It is an arithmetic number, because the mean of its divisors is an integer number (4280551).

Almost surely, 2^8561101 is an apocalyptic number.

It is an amenable number.

8561101 is a deficient number, since it is larger than the sum of its proper divisors (1).

8561101 is an equidigital number, since it uses as much as digits as its factorization.

8561101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 22.

The square root of 8561101 is about 2925.9359186421. The cubic root of 8561101 is about 204.5705943272.

Adding to 8561101 its reverse (1011658), we get a palindrome (9572759).

The spelling of 8561101 in words is "eight million, five hundred sixty-one thousand, one hundred one".