16162001 has 2 divisors, whose sum is σ = 16162002. Its totient is φ = 16162000.

The previous prime is 16161991. The next prime is 16162037. The reversal of 16162001 is 10026161.

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., 15523600 + 638401 = 3940^2 + 799^2 .

It is an emirp because it is prime and its reverse (10026161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16162001 - 2¹⁴ = 16145617 is a prime.

It is a super-2 number, since 2×16162001² = 522420552648002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16165001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8081000 + 8081001.

It is an arithmetic number, because the mean of its divisors is an integer number (8081001).

Almost surely, 2^16162001 is an apocalyptic number.

It is an amenable number.

16162001 is a deficient number, since it is larger than the sum of its proper divisors (1).

16162001 is an equidigital number, since it uses as much as digits as its factorization.

16162001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 16162001 is about 4020.1991244216. The cubic root of 16162001 is about 252.8318076816.

Adding to 16162001 its reverse (10026161), we get a palindrome (26188162).

The spelling of 16162001 in words is "sixteen million, one hundred sixty-two thousand, one".