165396047 has 2 divisors, whose sum is σ = 165396048. Its totient is φ = 165396046.

The previous prime is 165396001. The next prime is 165396073. The reversal of 165396047 is 740693561.

It is a strong prime.

It is an emirp because it is prime and its reverse (740693561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 165396047 - 2⁶ = 165395983 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 165395995 and 165396013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165396097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82698023 + 82698024.

It is an arithmetic number, because the mean of its divisors is an integer number (82698024).

Almost surely, 2^165396047 is an apocalyptic number.

165396047 is a deficient number, since it is larger than the sum of its proper divisors (1).

165396047 is an equidigital number, since it uses as much as digits as its factorization.

165396047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 165396047 is about 12860.6394475547. The cubic root of 165396047 is about 548.9191412019.

The spelling of 165396047 in words is "one hundred sixty-five million, three hundred ninety-six thousand, forty-seven".