165256237 has 8 divisors (see below), whose sum is σ = 169749216. Its totient is φ = 160822992.

The previous prime is 165256213. The next prime is 165256249. The reversal of 165256237 is 732652561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 165256237 - 2¹¹ = 165254189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 165256196 and 165256205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165256207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9298 + ... + 20419.

It is an arithmetic number, because the mean of its divisors is an integer number (21218652).

Almost surely, 2^165256237 is an apocalyptic number.

It is an amenable number.

165256237 is a deficient number, since it is larger than the sum of its proper divisors (4492979).

165256237 is an equidigital number, since it uses as much as digits as its factorization.

165256237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29867.

The product of its digits is 75600, while the sum is 37.

The square root of 165256237 is about 12855.2027210776. The cubic root of 165256237 is about 548.7644296861.

The spelling of 165256237 in words is "one hundred sixty-five million, two hundred fifty-six thousand, two hundred thirty-seven".