104200561 has 2 divisors, whose sum is σ = 104200562. Its totient is φ = 104200560.

The previous prime is 104200543. The next prime is 104200583. The reversal of 104200561 is 165002401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58232161 + 45968400 = 7631^2 + 6780^2 .

It is a cyclic number.

It is not a de Polignac number, because 104200561 - 2¹⁷ = 104069489 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (104200661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52100280 + 52100281.

It is an arithmetic number, because the mean of its divisors is an integer number (52100281).

Almost surely, 2^104200561 is an apocalyptic number.

It is an amenable number.

104200561 is a deficient number, since it is larger than the sum of its proper divisors (1).

104200561 is an equidigital number, since it uses as much as digits as its factorization.

104200561 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 19.

The square root of 104200561 is about 10207.8676029815. The cubic root of 104200561 is about 470.5690421685.

Adding to 104200561 its reverse (165002401), we get a palindrome (269202962).

The spelling of 104200561 in words is "one hundred four million, two hundred thousand, five hundred sixty-one".