16321051 has 4 divisors (see below), whose sum is σ = 16329600. Its totient is φ = 16312504.

The previous prime is 16321049. The next prime is 16321093. The reversal of 16321051 is 15012361.

16321051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 16321051 - 2¹ = 16321049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16321001) 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, 45 + ... + 5713.

It is an arithmetic number, because the mean of its divisors is an integer number (4082400).

Almost surely, 2^16321051 is an apocalyptic number.

16321051 is a deficient number, since it is larger than the sum of its proper divisors (8549).

16321051 is an equidigital number, since it uses as much as digits as its factorization.

16321051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8548.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 16321051 is about 4039.9320538841. The cubic root of 16321051 is about 253.6584731421.

The spelling of 16321051 in words is "sixteen million, three hundred twenty-one thousand, fifty-one".