165570127 has 2 divisors, whose sum is σ = 165570128. Its totient is φ = 165570126.

The previous prime is 165570121. The next prime is 165570203. The reversal of 165570127 is 721075561.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165570127 is a prime.

It is a super-2 number, since 2×165570127² = 54826933909592258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 165570092 and 165570101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165570121) 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 as a sum of consecutive naturals, namely, 82785063 + 82785064.

It is an arithmetic number, because the mean of its divisors is an integer number (82785064).

Almost surely, 2^165570127 is an apocalyptic number.

165570127 is a deficient number, since it is larger than the sum of its proper divisors (1).

165570127 is an equidigital number, since it uses as much as digits as its factorization.

165570127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14700, while the sum is 34.

The square root of 165570127 is about 12867.4056048607. The cubic root of 165570127 is about 549.1116535405. Note that the first 3 decimals are identical.

The spelling of 165570127 in words is "one hundred sixty-five million, five hundred seventy thousand, one hundred twenty-seven".