104903561 has 12 divisors (see below), whose sum is σ = 122266368. Its totient is φ = 89743752.

The previous prime is 104903537. The next prime is 104903563. The reversal of 104903561 is 165309401.

It is not a de Polignac number, because 104903561 - 2⁶ = 104903497 is a prime.

It is a super-2 number, since 2×104903561² = 22009514220961442, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (104903563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27980 + ... + 31506.

It is an arithmetic number, because the mean of its divisors is an integer number (10188864).

Almost surely, 2^104903561 is an apocalyptic number.

It is an amenable number.

104903561 is a deficient number, since it is larger than the sum of its proper divisors (17362807).

104903561 is an equidigital number, since it uses as much as digits as its factorization.

104903561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4148 (or 4141 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 104903561 is about 10242.2439435897. The cubic root of 104903561 is about 471.6249189674.

The spelling of 104903561 in words is "one hundred four million, nine hundred three thousand, five hundred sixty-one".