162165655 has 4 divisors (see below), whose sum is σ = 194598792. Its totient is φ = 129732520.

The previous prime is 162165623. The next prime is 162165659. The reversal of 162165655 is 556561261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 556561261 = 71 ⋅7838891.

It is not a de Polignac number, because 162165655 - 2⁵ = 162165623 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 (162165659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16216561 + ... + 16216570.

It is an arithmetic number, because the mean of its divisors is an integer number (48649698).

Almost surely, 2^162165655 is an apocalyptic number.

162165655 is a deficient number, since it is larger than the sum of its proper divisors (32433137).

162165655 is an equidigital number, since it uses as much as digits as its factorization.

162165655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32433136.

The product of its digits is 54000, while the sum is 37.

The square root of 162165655 is about 12734.4279416077. The cubic root of 162165655 is about 545.3219263483.

It can be divided in two parts, 1621 and 65655, that multiplied together give a triangular number (106426755 = T₁₄₅₈₉).

The spelling of 162165655 in words is "one hundred sixty-two million, one hundred sixty-five thousand, six hundred fifty-five".