10011001 has 32 divisors (see below), whose sum is σ = 13724928.
Its totient is φ = 7050240.
The previous prime is 10010989. The next prime is 10011013.
It can be divided in two parts, 1001 and 1001, that added together give a palindrome (2002).
10011001 is nontrivially palindromic in base 10.
It is an interprime number because it is at equal distance from previous prime (10010989) and next prime (10011013).
It is a cyclic number.
It is not a de Polignac number, because 10011001 - 25 = 10010969 is a prime.
10011001 is a strobogrammatic number because it is the same when read upside-down.
It is a deceptive number, since it divides R10011000.
It is not an unprimeable number, because it can be changed into a prime (10011091) 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 31 ways as a sum of consecutive naturals, for example, 73005 + ... + 73141.
It is an arithmetic number, because the mean of its divisors is an integer number (428904).
Almost surely, 210011001 is an apocalyptic number.
10011001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.
It is an amenable number.
10011001 is a deficient number, since it is larger than the sum of its proper divisors (3713927).
10011001 is a wasteful number, since it uses less digits than its factorization.
10011001 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 241.
The product of its (nonzero) digits is 1, while the sum is 4.
The square root of 10011001 is about 3164.0165928768.
The cubic root of 10011001 is about 215.5224431705.
The spelling of 10011001 in words is "ten million, eleven thousand, one".