111520847 has 2 divisors, whose sum is σ = 111520848. Its totient is φ = 111520846.

The previous prime is 111520841. The next prime is 111520879. The reversal of 111520847 is 748025111.

It is a weak prime.

It is an emirp because it is prime and its reverse (748025111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111520847 - 2⁴ = 111520831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111520841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55760423 + 55760424.

It is an arithmetic number, because the mean of its divisors is an integer number (55760424).

Almost surely, 2^111520847 is an apocalyptic number.

111520847 is a deficient number, since it is larger than the sum of its proper divisors (1).

111520847 is an equidigital number, since it uses as much as digits as its factorization.

111520847 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2240, while the sum is 29.

The square root of 111520847 is about 10560.3431288950. The cubic root of 111520847 is about 481.3400732736.

Adding to 111520847 its reverse (748025111), we get a palindrome (859545958).

The spelling of 111520847 in words is "one hundred eleven million, five hundred twenty thousand, eight hundred forty-seven".