165636053 has 12 divisors (see below), whose sum is σ = 191647680. Its totient is φ = 142651080.

The previous prime is 165636047. The next prime is 165636101. The reversal of 165636053 is 350636561.

It is not a de Polignac number, because 165636053 - 2⁶ = 165635989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165636553) 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 11 ways as a sum of consecutive naturals, for example, 33725 + ... + 38322.

It is an arithmetic number, because the mean of its divisors is an integer number (15970640).

Almost surely, 2^165636053 is an apocalyptic number.

It is an amenable number.

165636053 is a deficient number, since it is larger than the sum of its proper divisors (26011627).

165636053 is a wasteful number, since it uses less digits than its factorization.

165636053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72088 (or 72077 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 35.

The square root of 165636053 is about 12869.9670939750. The cubic root of 165636053 is about 549.1845248405.

The spelling of 165636053 in words is "one hundred sixty-five million, six hundred thirty-six thousand, fifty-three".