165503426 has 16 divisors (see below), whose sum is σ = 271192320. Its totient is φ = 75126480.

The previous prime is 165503419. The next prime is 165503447. The reversal of 165503426 is 624305561.

165503426 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 165503392 and 165503401.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12815 + ... + 22253.

It is an arithmetic number, because the mean of its divisors is an integer number (16949520).

Almost surely, 2^165503426 is an apocalyptic number.

165503426 is a deficient number, since it is larger than the sum of its proper divisors (105688894).

165503426 is a wasteful number, since it uses less digits than its factorization.

165503426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10249.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 165503426 is about 12864.8134848508. The cubic root of 165503426 is about 549.0379059055.

Adding to 165503426 its reverse (624305561), we get a palindrome (789808987).

The spelling of 165503426 in words is "one hundred sixty-five million, five hundred three thousand, four hundred twenty-six".