162721327 has 2 divisors, whose sum is σ = 162721328. Its totient is φ = 162721326.

The previous prime is 162721313. The next prime is 162721369. The reversal of 162721327 is 723127261.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 162721327 - 2²⁷ = 28503599 is a prime.

It is a Chen prime.

It is equal to p_9118381 and since 162721327 and 9118381 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (162721397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81360663 + 81360664.

It is an arithmetic number, because the mean of its divisors is an integer number (81360664).

Almost surely, 2^162721327 is an apocalyptic number.

162721327 is a deficient number, since it is larger than the sum of its proper divisors (1).

162721327 is an equidigital number, since it uses as much as digits as its factorization.

162721327 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7056, while the sum is 31.

The square root of 162721327 is about 12756.2269892002. The cubic root of 162721327 is about 545.9440775600.

Adding to 162721327 its reverse (723127261), we get a palindrome (885848588).

The spelling of 162721327 in words is "one hundred sixty-two million, seven hundred twenty-one thousand, three hundred twenty-seven".