165503927 has 4 divisors (see below), whose sum is σ = 174214680. Its totient is φ = 156793176.

The previous prime is 165503917. The next prime is 165503939. The reversal of 165503927 is 729305561.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 165503927 - 2⁸ = 165503671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165503917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4355348 + ... + 4355385.

It is an arithmetic number, because the mean of its divisors is an integer number (43553670).

Almost surely, 2^165503927 is an apocalyptic number.

165503927 is a deficient number, since it is larger than the sum of its proper divisors (8710753).

165503927 is an equidigital number, since it uses as much as digits as its factorization.

165503927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8710752.

The product of its (nonzero) digits is 56700, while the sum is 38.

The square root of 165503927 is about 12864.8329565525. The cubic root of 165503927 is about 549.0384599075.

The spelling of 165503927 in words is "one hundred sixty-five million, five hundred three thousand, nine hundred twenty-seven".