16016401 has 2 divisors, whose sum is σ = 16016402. Its totient is φ = 16016400.

The previous prime is 16016389. The next prime is 16016423. The reversal of 16016401 is 10461061.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15249025 + 767376 = 3905^2 + 876^2 .

It is a cyclic number.

It is not a de Polignac number, because 16016401 - 2⁵ = 16016369 is a prime.

It is not a weakly prime, because it can be changed into another prime (16016461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8008200 + 8008201.

It is an arithmetic number, because the mean of its divisors is an integer number (8008201).

Almost surely, 2^16016401 is an apocalyptic number.

It is an amenable number.

16016401 is a deficient number, since it is larger than the sum of its proper divisors (1).

16016401 is an equidigital number, since it uses as much as digits as its factorization.

16016401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 16016401 is about 4002.0495998925. The cubic root of 16016401 is about 252.0702804312.

Adding to 16016401 its reverse (10461061), we get a palindrome (26477462).

It can be divided in two parts, 160 and 16401, that added together give a palindrome (16561).

The spelling of 16016401 in words is "sixteen million, sixteen thousand, four hundred one".