165055237 has 4 divisors (see below), whose sum is σ = 167518816. Its totient is φ = 162591660.

The previous prime is 165055213. The next prime is 165055259. The reversal of 165055237 is 732550561.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165055237 is a prime.

It is a super-2 number, since 2×165055237² = 54486462522252338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165055277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1231689 + ... + 1231822.

It is an arithmetic number, because the mean of its divisors is an integer number (41879704).

Almost surely, 2^165055237 is an apocalyptic number.

It is an amenable number.

165055237 is a deficient number, since it is larger than the sum of its proper divisors (2463579).

165055237 is an equidigital number, since it uses as much as digits as its factorization.

165055237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2463578.

The product of its (nonzero) digits is 31500, while the sum is 34.

The square root of 165055237 is about 12847.3824960573. The cubic root of 165055237 is about 548.5418533156.

The spelling of 165055237 in words is "one hundred sixty-five million, fifty-five thousand, two hundred thirty-seven".