11111601 has 8 divisors (see below), whose sum is σ = 14840064. Its totient is φ = 7395440.

The previous prime is 11111579. The next prime is 11111621. The reversal of 11111601 is 10611111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11111601 - 2¹³ = 11103409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11111621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 705 + ... + 4766.

It is an arithmetic number, because the mean of its divisors is an integer number (1855008).

Almost surely, 2^11111601 is an apocalyptic number.

It is an amenable number.

11111601 is a deficient number, since it is larger than the sum of its proper divisors (3728463).

11111601 is an equidigital number, since it uses as much as digits as its factorization.

11111601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6151.

The product of its (nonzero) digits is 6, while the sum is 12.

The square root of 11111601 is about 3333.4068158567. The cubic root of 11111601 is about 223.1475961235.

Adding to 11111601 its reverse (10611111), we get a palindrome (21722712).

The spelling of 11111601 in words is "eleven million, one hundred eleven thousand, six hundred one".