165124871 has 2 divisors, whose sum is σ = 165124872. Its totient is φ = 165124870.

The previous prime is 165124829. The next prime is 165124891. The reversal of 165124871 is 178421561.

It is a strong prime.

It is an emirp because it is prime and its reverse (178421561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 165124871 - 2¹⁴ = 165108487 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165124891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82562435 + 82562436.

It is an arithmetic number, because the mean of its divisors is an integer number (82562436).

Almost surely, 2^165124871 is an apocalyptic number.

165124871 is a deficient number, since it is larger than the sum of its proper divisors (1).

165124871 is an equidigital number, since it uses as much as digits as its factorization.

165124871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13440, while the sum is 35.

The square root of 165124871 is about 12850.0922564782. The cubic root of 165124871 is about 548.6189826326.

The spelling of 165124871 in words is "one hundred sixty-five million, one hundred twenty-four thousand, eight hundred seventy-one".