16332401 has 4 divisors (see below), whose sum is σ = 16491072. Its totient is φ = 16173732.

The previous prime is 16332383. The next prime is 16332403. The reversal of 16332401 is 10423361.

16332401 is nontrivially palindromic in base 12.

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 16332401 - 2¹⁴ = 16316017 is a prime.

It is a Duffinian number.

It is a zygodrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (16332403) 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, 79181 + ... + 79386.

It is an arithmetic number, because the mean of its divisors is an integer number (4122768).

Almost surely, 2^16332401 is an apocalyptic number.

It is an amenable number.

16332401 is a deficient number, since it is larger than the sum of its proper divisors (158671).

16332401 is a wasteful number, since it uses less digits than its factorization.

16332401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158670.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 16332401 is about 4041.3365363454. The cubic root of 16332401 is about 253.7172593185.

Adding to 16332401 its reverse (10423361), we get a palindrome (26755762).

The spelling of 16332401 in words is "sixteen million, three hundred thirty-two thousand, four hundred one".