101600561 has 2 divisors, whose sum is σ = 101600562. Its totient is φ = 101600560.

The previous prime is 101600507. The next prime is 101600593. The reversal of 101600561 is 165006101.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80209936 + 21390625 = 8956^2 + 4625^2 .

It is a cyclic number.

It is not a de Polignac number, because 101600561 - 2⁶ = 101600497 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (101600461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50800280 + 50800281.

It is an arithmetic number, because the mean of its divisors is an integer number (50800281).

Almost surely, 2^101600561 is an apocalyptic number.

It is an amenable number.

101600561 is a deficient number, since it is larger than the sum of its proper divisors (1).

101600561 is an equidigital number, since it uses as much as digits as its factorization.

101600561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 101600561 is about 10079.7103629023. The cubic root of 101600561 is about 466.6221696235.

Adding to 101600561 its reverse (165006101), we get a palindrome (266606662).

The spelling of 101600561 in words is "one hundred one million, six hundred thousand, five hundred sixty-one".