162206501 has 2 divisors, whose sum is σ = 162206502. Its totient is φ = 162206500.

The previous prime is 162206489. The next prime is 162206507. The reversal of 162206501 is 105602261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90820900 + 71385601 = 9530^2 + 8449^2 .

It is an emirp because it is prime and its reverse (105602261) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-162206501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (162206507) 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, 81103250 + 81103251.

It is an arithmetic number, because the mean of its divisors is an integer number (81103251).

Almost surely, 2^162206501 is an apocalyptic number.

It is an amenable number.

162206501 is a deficient number, since it is larger than the sum of its proper divisors (1).

162206501 is an equidigital number, since it uses as much as digits as its factorization.

162206501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 162206501 is about 12736.0316032899. The cubic root of 162206501 is about 545.3677074141.

Adding to 162206501 its reverse (105602261), we get a palindrome (267808762).

The spelling of 162206501 in words is "one hundred sixty-two million, two hundred six thousand, five hundred one".