11955601 has 4 divisors (see below), whose sum is σ = 13663552. Its totient is φ = 10247652.

The previous prime is 11955599. The next prime is 11955649. The reversal of 11955601 is 10655911.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11955601 - 2¹ = 11955599 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11955601.

It is not an unprimeable number, because it can be changed into a prime (11952601) 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 in 3 ways as a sum of consecutive naturals, for example, 853965 + ... + 853978.

It is an arithmetic number, because the mean of its divisors is an integer number (3415888).

Almost surely, 2^11955601 is an apocalyptic number.

It is an amenable number.

11955601 is a deficient number, since it is larger than the sum of its proper divisors (1707951).

11955601 is an equidigital number, since it uses as much as digits as its factorization.

11955601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1707950.

The product of its (nonzero) digits is 1350, while the sum is 28.

The square root of 11955601 is about 3457.6872328191. The cubic root of 11955601 is about 228.6601430743.

The spelling of 11955601 in words is "eleven million, nine hundred fifty-five thousand, six hundred one".