111055601 has 2 divisors, whose sum is σ = 111055602. Its totient is φ = 111055600.

The previous prime is 111055583. The next prime is 111055603. The reversal of 111055601 is 106550111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93624976 + 17430625 = 9676^2 + 4175^2 .

It is a cyclic number.

It is not a de Polignac number, because 111055601 - 2²² = 106861297 is a prime.

Together with 111055603, 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 (111055603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55527800 + 55527801.

It is an arithmetic number, because the mean of its divisors is an integer number (55527801).

Almost surely, 2^111055601 is an apocalyptic number.

It is an amenable number.

111055601 is a deficient number, since it is larger than the sum of its proper divisors (1).

111055601 is an equidigital number, since it uses as much as digits as its factorization.

111055601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 150, while the sum is 20.

The square root of 111055601 is about 10538.2921291830. The cubic root of 111055601 is about 480.6697839992.

It can be divided in two parts, 11 and 1055601, that multiplied together give a palindrome (11611611).

The spelling of 111055601 in words is "one hundred eleven million, fifty-five thousand, six hundred one".