111051601 has 2 divisors, whose sum is σ = 111051602. Its totient is φ = 111051600.

The previous prime is 111051587. The next prime is 111051607. The reversal of 111051601 is 106150111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110754576 + 297025 = 10524^2 + 545^2 .

It is a cyclic number.

It is not a de Polignac number, because 111051601 - 2¹³ = 111043409 is a prime.

It is not a weakly prime, because it can be changed into another prime (111051607) 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, 55525800 + 55525801.

It is an arithmetic number, because the mean of its divisors is an integer number (55525801).

Almost surely, 2^111051601 is an apocalyptic number.

It is an amenable number.

111051601 is a deficient number, since it is larger than the sum of its proper divisors (1).

111051601 is an equidigital number, since it uses as much as digits as its factorization.

111051601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30, while the sum is 16.

The square root of 111051601 is about 10538.1023434013. The cubic root of 111051601 is about 480.6640130094.

The spelling of 111051601 in words is "one hundred eleven million, fifty-one thousand, six hundred one".