11561201 has 4 divisors (see below), whose sum is σ = 11807232. Its totient is φ = 11315172.

The previous prime is 11561197. The next prime is 11561213. The reversal of 11561201 is 10216511.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10216511 = 1877 ⋅5443.

It is a cyclic number.

It is not a de Polignac number, because 11561201 - 2² = 11561197 is a prime.

It is a super-2 number, since 2×11561201² = 267322737124802, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11561201.

It is not an unprimeable number, because it can be changed into a prime (11566201) 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 3 ways as a sum of consecutive naturals, for example, 122945 + ... + 123038.

It is an arithmetic number, because the mean of its divisors is an integer number (2951808).

Almost surely, 2^11561201 is an apocalyptic number.

It is an amenable number.

11561201 is a deficient number, since it is larger than the sum of its proper divisors (246031).

11561201 is an equidigital number, since it uses as much as digits as its factorization.

11561201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246030.

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 11561201 is about 3400.1766130600. The cubic root of 11561201 is about 226.1175739809.

Adding to 11561201 its reverse (10216511), we get a palindrome (21777712).

It can be divided in two parts, 115 and 61201, that added together give a palindrome (61316).

The spelling of 11561201 in words is "eleven million, five hundred sixty-one thousand, two hundred one".