16100401 has 4 divisors (see below), whose sum is σ = 16364404. Its totient is φ = 15836400.

The previous prime is 16100389. The next prime is 16100419. The reversal of 16100401 is 10400161.

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 1962801 + 14137600 = 1401^2 + 3760^2 .

It is a cyclic number.

It is not a de Polignac number, because 16100401 - 2¹¹ = 16098353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16100431) 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 3 ways as a sum of consecutive naturals, for example, 131910 + ... + 132031.

It is an arithmetic number, because the mean of its divisors is an integer number (4091101).

Almost surely, 2^16100401 is an apocalyptic number.

It is an amenable number.

16100401 is a deficient number, since it is larger than the sum of its proper divisors (264003).

16100401 is an equidigital number, since it uses as much as digits as its factorization.

16100401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264002.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 16100401 is about 4012.5304983265. The cubic root of 16100401 is about 252.5101835582.

Adding to 16100401 its reverse (10400161), we get a palindrome (26500562).

The spelling of 16100401 in words is "sixteen million, one hundred thousand, four hundred one".