165414971 has 2 divisors, whose sum is σ = 165414972. Its totient is φ = 165414970.

The previous prime is 165414943. The next prime is 165414979. The reversal of 165414971 is 179414561.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165414971 is a prime.

It is a super-2 number, since 2×165414971² = 54724225261861682, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (165414979) 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 as a sum of consecutive naturals, namely, 82707485 + 82707486.

It is an arithmetic number, because the mean of its divisors is an integer number (82707486).

Almost surely, 2^165414971 is an apocalyptic number.

165414971 is a deficient number, since it is larger than the sum of its proper divisors (1).

165414971 is an equidigital number, since it uses as much as digits as its factorization.

165414971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 38.

The square root of 165414971 is about 12861.3751597564. The cubic root of 165414971 is about 548.9400754985.

It can be divided in two parts, 16541 and 4971, that added together give a palindrome (21512).

The spelling of 165414971 in words is "one hundred sixty-five million, four hundred fourteen thousand, nine hundred seventy-one".