165655153 has 4 divisors (see below), whose sum is σ = 167203440. Its totient is φ = 164106868.

The previous prime is 165655151. The next prime is 165655183. The reversal of 165655153 is 351556561.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 351556561 = 9437 ⋅37253.

It is a cyclic number.

It is not a de Polignac number, because 165655153 - 2¹ = 165655151 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165655151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 773983 + ... + 774196.

It is an arithmetic number, because the mean of its divisors is an integer number (41800860).

Almost surely, 2^165655153 is an apocalyptic number.

It is an amenable number.

165655153 is a deficient number, since it is larger than the sum of its proper divisors (1548287).

165655153 is a wasteful number, since it uses less digits than its factorization.

165655153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1548286.

The product of its digits is 67500, while the sum is 37.

The square root of 165655153 is about 12870.7091102239. The cubic root of 165655153 is about 549.2056334117.

The spelling of 165655153 in words is "one hundred sixty-five million, six hundred fifty-five thousand, one hundred fifty-three".