16845401 has 4 divisors (see below), whose sum is σ = 16882404. Its totient is φ = 16808400.

The previous prime is 16845373. The next prime is 16845403. The reversal of 16845401 is 10454861.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11560000 + 5285401 = 3400^2 + 2299^2 .

It is a cyclic number.

It is not a de Polignac number, because 16845401 - 2²² = 12651097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16845403) 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, 17810 + ... + 18731.

It is an arithmetic number, because the mean of its divisors is an integer number (4220601).

Almost surely, 2^16845401 is an apocalyptic number.

It is an amenable number.

16845401 is a deficient number, since it is larger than the sum of its proper divisors (37003).

16845401 is an equidigital number, since it uses as much as digits as its factorization.

16845401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37002.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 16845401 is about 4104.3149245641. The cubic root of 16845401 is about 256.3463380778.

The spelling of 16845401 in words is "sixteen million, eight hundred forty-five thousand, four hundred one".