162215797 has 4 divisors (see below), whose sum is σ = 163821996. Its totient is φ = 160609600.

The previous prime is 162215783. The next prime is 162215813. The reversal of 162215797 is 797512261.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 153536881 + 8678916 = 12391^2 + 2946^2 .

It is a cyclic number.

It is not a de Polignac number, because 162215797 - 2¹¹ = 162213749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162215197) 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 in 3 ways as a sum of consecutive naturals, for example, 802948 + ... + 803149.

It is an arithmetic number, because the mean of its divisors is an integer number (40955499).

Almost surely, 2^162215797 is an apocalyptic number.

It is an amenable number.

162215797 is a deficient number, since it is larger than the sum of its proper divisors (1606199).

162215797 is a wasteful number, since it uses less digits than its factorization.

162215797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1606198.

The product of its digits is 52920, while the sum is 40.

The square root of 162215797 is about 12736.3965469045. The cubic root of 162215797 is about 545.3781254950.

The spelling of 162215797 in words is "one hundred sixty-two million, two hundred fifteen thousand, seven hundred ninety-seven".