111891053 has 2 divisors, whose sum is σ = 111891054. Its totient is φ = 111891052.

The previous prime is 111891041. The next prime is 111891079. The reversal of 111891053 is 350198111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93760489 + 18130564 = 9683^2 + 4258^2 .

It is an emirp because it is prime and its reverse (350198111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111891053 - 2¹⁴ = 111874669 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111891023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55945526 + 55945527.

It is an arithmetic number, because the mean of its divisors is an integer number (55945527).

Almost surely, 2^111891053 is an apocalyptic number.

It is an amenable number.

111891053 is a deficient number, since it is larger than the sum of its proper divisors (1).

111891053 is an equidigital number, since it uses as much as digits as its factorization.

111891053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 29.

The square root of 111891053 is about 10577.8567299808. The cubic root of 111891053 is about 481.8721058378.

The spelling of 111891053 in words is "one hundred eleven million, eight hundred ninety-one thousand, fifty-three".