11405001 has 4 divisors (see below), whose sum is σ = 15206672. Its totient is φ = 7603332.

The previous prime is 11404999. The next prime is 11405029. The reversal of 11405001 is 10050411.

It is a happy number.

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 not a de Polignac number, because 11405001 - 2¹ = 11404999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11405041) 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, 1900831 + ... + 1900836.

It is an arithmetic number, because the mean of its divisors is an integer number (3801668).

Almost surely, 2^11405001 is an apocalyptic number.

It is an amenable number.

11405001 is a deficient number, since it is larger than the sum of its proper divisors (3801671).

11405001 is an equidigital number, since it uses as much as digits as its factorization.

11405001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3801670.

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 11405001 is about 3377.1291062084. The cubic root of 11405001 is about 225.0946169962.

Adding to 11405001 its reverse (10050411), we get a palindrome (21455412).

The spelling of 11405001 in words is "eleven million, four hundred five thousand, one".