162155857 has 2 divisors, whose sum is σ = 162155858. Its totient is φ = 162155856.

The previous prime is 162155839. The next prime is 162155891. The reversal of 162155857 is 758551261.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129254161 + 32901696 = 11369^2 + 5736^2 .

It is a cyclic number.

It is not a de Polignac number, because 162155857 - 2²³ = 153767249 is a prime.

It is not a weakly prime, because it can be changed into another prime (162155837) 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, 81077928 + 81077929.

It is an arithmetic number, because the mean of its divisors is an integer number (81077929).

Almost surely, 2^162155857 is an apocalyptic number.

It is an amenable number.

162155857 is a deficient number, since it is larger than the sum of its proper divisors (1).

162155857 is an equidigital number, since it uses as much as digits as its factorization.

162155857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84000, while the sum is 40.

The square root of 162155857 is about 12734.0432306475. The cubic root of 162155857 is about 545.3109433983.

The spelling of 162155857 in words is "one hundred sixty-two million, one hundred fifty-five thousand, eight hundred fifty-seven".