11601601 has 6 divisors (see below), whose sum is σ = 12752306. Its totient is φ = 10546800.

The previous prime is 11601593. The next prime is 11601607. The reversal of 11601601 is 10610611.

It can be written as a sum of positive squares in only one way, i.e., 11553201 + 48400 = 3399^2 + 220^2 .

It is not a de Polignac number, because 11601601 - 2³ = 11601593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11601607) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 47820 + ... + 48061.

Almost surely, 2^11601601 is an apocalyptic number.

11601601 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11601601 is a deficient number, since it is larger than the sum of its proper divisors (1150705).

11601601 is an equidigital number, since it uses as much as digits as its factorization.

11601601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95903 (or 95892 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 11601601 is about 3406.1122999690. The cubic root of 11601601 is about 226.3806530455.

The spelling of 11601601 in words is "eleven million, six hundred one thousand, six hundred one".