162001601 has 4 divisors (see below), whose sum is σ = 162519492. Its totient is φ = 161483712.

The previous prime is 162001573. The next prime is 162001603. The reversal of 162001601 is 106100261.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 106100261 = 281 ⋅377581.

It can be written as a sum of positive squares in 2 ways, for example, as 26884225 + 135117376 = 5185^2 + 11624^2 .

It is a cyclic number.

It is not a de Polignac number, because 162001601 - 2¹⁰ = 162000577 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 162001601.

It is not an unprimeable number, because it can be changed into a prime (162001603) 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, 258476 + ... + 259101.

It is an arithmetic number, because the mean of its divisors is an integer number (40629873).

Almost surely, 2^162001601 is an apocalyptic number.

It is an amenable number.

162001601 is a deficient number, since it is larger than the sum of its proper divisors (517891).

162001601 is an equidigital number, since it uses as much as digits as its factorization.

162001601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517890.

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

The square root of 162001601 is about 12727.9849544223. The cubic root of 162001601 is about 545.1379736524.

Adding to 162001601 its reverse (106100261), we get a palindrome (268101862).

The spelling of 162001601 in words is "one hundred sixty-two million, one thousand, six hundred one".