11005601 has 4 divisors (see below), whose sum is σ = 11012400. Its totient is φ = 10998804.

The previous prime is 11005583. The next prime is 11005607. The reversal of 11005601 is 10650011.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11005601 - 2⁶ = 11005537 is a prime.

It is a super-2 number, since 2×11005601² = 242246506742402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11005607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 590 + ... + 4728.

It is an arithmetic number, because the mean of its divisors is an integer number (2753100).

Almost surely, 2^11005601 is an apocalyptic number.

It is an amenable number.

11005601 is a deficient number, since it is larger than the sum of its proper divisors (6799).

11005601 is an equidigital number, since it uses as much as digits as its factorization.

11005601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6798.

The product of its (nonzero) digits is 30, while the sum is 14.

The square root of 11005601 is about 3317.4690654172. The cubic root of 11005601 is about 222.4357496596.

Adding to 11005601 its reverse (10650011), we get a palindrome (21655612).

The spelling of 11005601 in words is "eleven million, five thousand, six hundred one".