162216553 has 2 divisors, whose sum is σ = 162216554. Its totient is φ = 162216552.

The previous prime is 162216529. The next prime is 162216557. The reversal of 162216553 is 355612261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 147185424 + 15031129 = 12132^2 + 3877^2 .

It is an emirp because it is prime and its reverse (355612261) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 162216553 - 2¹⁷ = 162085481 is a prime.

It is not a weakly prime, because it can be changed into another prime (162216557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81108276 + 81108277.

It is an arithmetic number, because the mean of its divisors is an integer number (81108277).

Almost surely, 2^162216553 is an apocalyptic number.

It is an amenable number.

162216553 is a deficient number, since it is larger than the sum of its proper divisors (1).

162216553 is an equidigital number, since it uses as much as digits as its factorization.

162216553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10800, while the sum is 31.

The square root of 162216553 is about 12736.4262255941. The cubic root of 162216553 is about 545.3789727311.

The spelling of 162216553 in words is "one hundred sixty-two million, two hundred sixteen thousand, five hundred fifty-three".