165727157 has 2 divisors, whose sum is σ = 165727158. Its totient is φ = 165727156.

The previous prime is 165727151. The next prime is 165727171. The reversal of 165727157 is 751727561.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 165662641 + 64516 = 12871^2 + 254^2 .

It is a cyclic number.

It is not a de Polignac number, because 165727157 - 2⁸ = 165726901 is a prime.

It is a super-3 number, since 3×165727157³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165727151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82863578 + 82863579.

It is an arithmetic number, because the mean of its divisors is an integer number (82863579).

Almost surely, 2^165727157 is an apocalyptic number.

It is an amenable number.

165727157 is a deficient number, since it is larger than the sum of its proper divisors (1).

165727157 is an equidigital number, since it uses as much as digits as its factorization.

165727157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 102900, while the sum is 41.

The square root of 165727157 is about 12873.5060104076. The cubic root of 165727157 is about 549.2851948249.

The spelling of 165727157 in words is "one hundred sixty-five million, seven hundred twenty-seven thousand, one hundred fifty-seven".