11605001 has 4 divisors (see below), whose sum is σ = 11720004. Its totient is φ = 11490000.

The previous prime is 11604961. The next prime is 11605007. The reversal of 11605001 is 10050611.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5107600 + 6497401 = 2260^2 + 2549^2 .

It is a cyclic number.

It is not a de Polignac number, because 11605001 - 2⁶ = 11604937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11605007) 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, 57350 + ... + 57551.

It is an arithmetic number, because the mean of its divisors is an integer number (2930001).

Almost surely, 2^11605001 is an apocalyptic number.

It is an amenable number.

11605001 is a deficient number, since it is larger than the sum of its proper divisors (115003).

11605001 is a wasteful number, since it uses less digits than its factorization.

11605001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115002.

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

The square root of 11605001 is about 3406.6113661526. The cubic root of 11605001 is about 226.4027654833.

Adding to 11605001 its reverse (10050611), we get a palindrome (21655612).

The spelling of 11605001 in words is "eleven million, six hundred five thousand, one".