16043601 has 32 divisors (see below), whose sum is σ = 25400320. Its totient is φ = 8817984.

The previous prime is 16043593. The next prime is 16043603. The reversal of 16043601 is 10634061.

It is not a de Polignac number, because 16043601 - 2³ = 16043593 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16043603) 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 31 ways as a sum of consecutive naturals, for example, 98346 + ... + 98508.

It is an arithmetic number, because the mean of its divisors is an integer number (793760).

Almost surely, 2^16043601 is an apocalyptic number.

It is an amenable number.

16043601 is a deficient number, since it is larger than the sum of its proper divisors (9356719).

16043601 is a wasteful number, since it uses less digits than its factorization.

16043601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 16043601 is about 4005.4464170676. The cubic root of 16043601 is about 252.2128932862.

Adding to 16043601 its reverse (10634061), we get a palindrome (26677662).

The spelling of 16043601 in words is "sixteen million, forty-three thousand, six hundred one".