112256561 has 2 divisors, whose sum is σ = 112256562. Its totient is φ = 112256560.

The previous prime is 112256533. The next prime is 112256563. The reversal of 112256561 is 165652211.

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., 104939536 + 7317025 = 10244^2 + 2705^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112256561 is a prime.

Together with 112256563, 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 (112256563) 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, 56128280 + 56128281.

It is an arithmetic number, because the mean of its divisors is an integer number (56128281).

Almost surely, 2^112256561 is an apocalyptic number.

It is an amenable number.

112256561 is a deficient number, since it is larger than the sum of its proper divisors (1).

112256561 is an equidigital number, since it uses as much as digits as its factorization.

112256561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3600, while the sum is 29.

The square root of 112256561 is about 10595.1196784180. The cubic root of 112256561 is about 482.3962367364.

The spelling of 112256561 in words is "one hundred twelve million, two hundred fifty-six thousand, five hundred sixty-one".