16143001 has 12 divisors (see below), whose sum is σ = 19040052. Its totient is φ = 13644288.

The previous prime is 16142993. The next prime is 16143007. The reversal of 16143001 is 10034161.

It can be written as a sum of positive squares in 2 ways, for example, as 2893401 + 13249600 = 1701^2 + 3640^2 .

It is not a de Polignac number, because 16143001 - 2³ = 16142993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16143007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1321 + ... + 5833.

It is an arithmetic number, because the mean of its divisors is an integer number (1586671).

Almost surely, 2^16143001 is an apocalyptic number.

It is an amenable number.

16143001 is a deficient number, since it is larger than the sum of its proper divisors (2897051).

16143001 is an equidigital number, since it uses as much as digits as its factorization.

16143001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4600 (or 4593 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 16143001 is about 4017.8353624806. The cubic root of 16143001 is about 252.7326927262.

Adding to 16143001 its reverse (10034161), we get a palindrome (26177162).

The spelling of 16143001 in words is "sixteen million, one hundred forty-three thousand, one".