165273147 has 24 divisors (see below), whose sum is σ = 268273824. Its totient is φ = 97282944.

The previous prime is 165273131. The next prime is 165273149. The reversal of 165273147 is 741372561.

It is a happy number.

It is not a de Polignac number, because 165273147 - 2⁴ = 165273131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165273149) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28018 + ... + 33399.

It is an arithmetic number, because the mean of its divisors is an integer number (11178076).

Almost surely, 2^165273147 is an apocalyptic number.

165273147 is a deficient number, since it is larger than the sum of its proper divisors (103000677).

165273147 is a wasteful number, since it uses less digits than its factorization.

165273147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61459 (or 61456 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 165273147 is about 12855.8604146125. The cubic root of 165273147 is about 548.7831466600.

The spelling of 165273147 in words is "one hundred sixty-five million, two hundred seventy-three thousand, one hundred forty-seven".