165253922 has 4 divisors (see below), whose sum is σ = 247880886. Its totient is φ = 82626960.

The previous prime is 165253909. The next prime is 165253931. The reversal of 165253922 is 229352561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 229352561 = 29 ⋅7908709.

It can be written as a sum of positive squares in only one way, i.e., 130667761 + 34586161 = 11431^2 + 5881^2 .

It is an unprimeable number.

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, 41313479 + ... + 41313482.

Almost surely, 2^165253922 is an apocalyptic number.

165253922 is a deficient number, since it is larger than the sum of its proper divisors (82626964).

165253922 is an equidigital number, since it uses as much as digits as its factorization.

165253922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82626963.

The product of its digits is 32400, while the sum is 35.

The square root of 165253922 is about 12855.1126793973. The cubic root of 165253922 is about 548.7618672098.

It can be divided in two parts, 1652539 and 22, that added together give a palindrome (1652561).

The spelling of 165253922 in words is "one hundred sixty-five million, two hundred fifty-three thousand, nine hundred twenty-two".