165253126 has 8 divisors (see below), whose sum is σ = 255875904. Its totient is φ = 79961160.

The previous prime is 165253117. The next prime is 165253147. The reversal of 165253126 is 621352561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1332625 + ... + 1332748.

It is an arithmetic number, because the mean of its divisors is an integer number (31984488).

Almost surely, 2^165253126 is an apocalyptic number.

165253126 is a deficient number, since it is larger than the sum of its proper divisors (90622778).

165253126 is a wasteful number, since it uses less digits than its factorization.

165253126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2665406.

The product of its digits is 10800, while the sum is 31.

The square root of 165253126 is about 12855.0817189157. The cubic root of 165253126 is about 548.7609861109.

The spelling of 165253126 in words is "one hundred sixty-five million, two hundred fifty-three thousand, one hundred twenty-six".