165253103 has 4 divisors (see below), whose sum is σ = 165621600. Its totient is φ = 164884608.

The previous prime is 165253061. The next prime is 165253111. The reversal of 165253103 is 301352561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 301352561 = 6113 ⋅49297.

It is a cyclic number.

It is not a de Polignac number, because 165253103 - 2²⁰ = 164204527 is a prime.

It is a super-2 number, since 2×165253103² = 54617176102257218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165253163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183575 + ... + 184472.

It is an arithmetic number, because the mean of its divisors is an integer number (41405400).

Almost surely, 2^165253103 is an apocalyptic number.

165253103 is a deficient number, since it is larger than the sum of its proper divisors (368497).

165253103 is an equidigital number, since it uses as much as digits as its factorization.

165253103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368496.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 165253103 is about 12855.0808243278. The cubic root of 165253103 is about 548.7609606520.

The spelling of 165253103 in words is "one hundred sixty-five million, two hundred fifty-three thousand, one hundred three".