11553601 has 2 divisors, whose sum is σ = 11553602. Its totient is φ = 11553600.

The previous prime is 11553599. The next prime is 11553623. The reversal of 11553601 is 10635511.

It is an a-pointer prime, because the next prime (11553623) can be obtained adding 11553601 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11553201 + 400 = 3399^2 + 20^2 .

It is a cyclic number.

It is not a de Polignac number, because 11553601 - 2¹ = 11553599 is a prime.

Together with 11553599, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11553631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5776800 + 5776801.

It is an arithmetic number, because the mean of its divisors is an integer number (5776801).

Almost surely, 2^11553601 is an apocalyptic number.

It is an amenable number.

11553601 is a deficient number, since it is larger than the sum of its proper divisors (1).

11553601 is an equidigital number, since it uses as much as digits as its factorization.

11553601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 11553601 is about 3399.0588403262. The cubic root of 11553601 is about 226.0680153966.

The spelling of 11553601 in words is "eleven million, five hundred fifty-three thousand, six hundred one".