165506126 has 4 divisors (see below), whose sum is σ = 248259192. Its totient is φ = 82753062.

The previous prime is 165506119. The next prime is 165506141. The reversal of 165506126 is 621605561.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 165506092 and 165506101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41376530 + ... + 41376533.

It is an arithmetic number, because the mean of its divisors is an integer number (62064798).

Almost surely, 2^165506126 is an apocalyptic number.

165506126 is a deficient number, since it is larger than the sum of its proper divisors (82753066).

165506126 is an equidigital number, since it uses as much as digits as its factorization.

165506126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82753065.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 165506126 is about 12864.9184218168. The cubic root of 165506126 is about 549.0408915321.

The spelling of 165506126 in words is "one hundred sixty-five million, five hundred six thousand, one hundred twenty-six".