16011001 has 4 divisors (see below), whose sum is σ = 16109392. Its totient is φ = 15912612.

The previous prime is 16010999. The next prime is 16011029. The reversal of 16011001 is 10011061.

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 a cyclic number.

It is not a de Polignac number, because 16011001 - 2¹ = 16010999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16011031) 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, 48951 + ... + 49276.

It is an arithmetic number, because the mean of its divisors is an integer number (4027348).

Almost surely, 2^16011001 is an apocalyptic number.

It is an amenable number.

16011001 is a deficient number, since it is larger than the sum of its proper divisors (98391).

16011001 is an equidigital number, since it uses as much as digits as its factorization.

16011001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98390.

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 16011001 is about 4001.3748887101. The cubic root of 16011001 is about 252.0419483792.

Adding to 16011001 its reverse (10011061), we get a palindrome (26022062).

The spelling of 16011001 in words is "sixteen million, eleven thousand, one".