162162001 has 4 divisors (see below), whose sum is σ = 162237492. Its totient is φ = 162086512.

The previous prime is 162161977. The next prime is 162162037. The reversal of 162162001 is 100261261.

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 106584976 + 55577025 = 10324^2 + 7455^2 .

It is a cyclic number.

It is not a de Polignac number, because 162162001 - 2⁵ = 162161969 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 162162001.

It is not an unprimeable number, because it can be changed into a prime (162162061) 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 in 3 ways as a sum of consecutive naturals, for example, 34426 + ... + 38851.

It is an arithmetic number, because the mean of its divisors is an integer number (40559373).

Almost surely, 2^162162001 is an apocalyptic number.

It is an amenable number.

162162001 is a deficient number, since it is larger than the sum of its proper divisors (75491).

162162001 is an equidigital number, since it uses as much as digits as its factorization.

162162001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75490.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 162162001 is about 12734.2844714574. The cubic root of 162162001 is about 545.3178304928.

The spelling of 162162001 in words is "one hundred sixty-two million, one hundred sixty-two thousand, one".