1104992561 has 2 divisors, whose sum is σ = 1104992562. Its totient is φ = 1104992560.

The previous prime is 1104992527. The next prime is 1104992563. The reversal of 1104992561 is 1652994011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 902641936 + 202350625 = 30044^2 + 14225^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1104992561 is a prime.

Together with 1104992563, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1104992563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 552496280 + 552496281.

It is an arithmetic number, because the mean of its divisors is an integer number (552496281).

Almost surely, 2^1104992561 is an apocalyptic number.

It is an amenable number.

1104992561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1104992561 is an equidigital number, since it uses as much as digits as its factorization.

1104992561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 1104992561 is about 33241.4283838706. The cubic root of 1104992561 is about 1033.8394924246.

The spelling of 1104992561 in words is "one billion, one hundred four million, nine hundred ninety-two thousand, five hundred sixty-one".