162211601 has 2 divisors, whose sum is σ = 162211602. Its totient is φ = 162211600.

The previous prime is 162211597. The next prime is 162211649. The reversal of 162211601 is 106112261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 161163025 + 1048576 = 12695^2 + 1024^2 .

It is a cyclic number.

It is not a de Polignac number, because 162211601 - 2² = 162211597 is a prime.

It is not a weakly prime, because it can be changed into another prime (162214601) 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 as a sum of consecutive naturals, namely, 81105800 + 81105801.

It is an arithmetic number, because the mean of its divisors is an integer number (81105801).

Almost surely, 2^162211601 is an apocalyptic number.

It is an amenable number.

162211601 is a deficient number, since it is larger than the sum of its proper divisors (1).

162211601 is an equidigital number, since it uses as much as digits as its factorization.

162211601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 162211601 is about 12736.2318210686. The cubic root of 162211601 is about 545.3734230628.

Adding to 162211601 its reverse (106112261), we get a palindrome (268323862).

The spelling of 162211601 in words is "one hundred sixty-two million, two hundred eleven thousand, six hundred one".