111470561 has 2 divisors, whose sum is σ = 111470562. Its totient is φ = 111470560.

The previous prime is 111470533. The next prime is 111470563. The reversal of 111470561 is 165074111.

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., 94090000 + 17380561 = 9700^2 + 4169^2 .

It is a cyclic number.

It is not a de Polignac number, because 111470561 - 2¹⁰ = 111469537 is a prime.

Together with 111470563, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111470561.

It is not a weakly prime, because it can be changed into another prime (111470563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55735280 + 55735281.

It is an arithmetic number, because the mean of its divisors is an integer number (55735281).

Almost surely, 2^111470561 is an apocalyptic number.

It is an amenable number.

111470561 is a deficient number, since it is larger than the sum of its proper divisors (1).

111470561 is an equidigital number, since it uses as much as digits as its factorization.

111470561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 26.

The square root of 111470561 is about 10557.9619718959. The cubic root of 111470561 is about 481.2677151853.

The spelling of 111470561 in words is "one hundred eleven million, four hundred seventy thousand, five hundred sixty-one".