104661559 has 2 divisors, whose sum is σ = 104661560. Its totient is φ = 104661558.

The previous prime is 104661521. The next prime is 104661593. The reversal of 104661559 is 955166401.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 104661559 - 2¹⁵ = 104628791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104661059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52330779 + 52330780.

It is an arithmetic number, because the mean of its divisors is an integer number (52330780).

Almost surely, 2^104661559 is an apocalyptic number.

104661559 is a deficient number, since it is larger than the sum of its proper divisors (1).

104661559 is an equidigital number, since it uses as much as digits as its factorization.

104661559 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 104661559 is about 10230.4232072774. The cubic root of 104661559 is about 471.2619759285.

The spelling of 104661559 in words is "one hundred four million, six hundred sixty-one thousand, five hundred fifty-nine".