162117547 has 4 divisors (see below), whose sum is σ = 169166160. Its totient is φ = 155068936.

The previous prime is 162117541. The next prime is 162117577. The reversal of 162117547 is 745711261.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-162117547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (162117541) 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 in 3 ways as a sum of consecutive naturals, for example, 3524272 + ... + 3524317.

It is an arithmetic number, because the mean of its divisors is an integer number (42291540).

Almost surely, 2^162117547 is an apocalyptic number.

162117547 is a deficient number, since it is larger than the sum of its proper divisors (7048613).

162117547 is an equidigital number, since it uses as much as digits as its factorization.

162117547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7048612.

The product of its digits is 11760, while the sum is 34.

The square root of 162117547 is about 12732.5389062826. The cubic root of 162117547 is about 545.2679960183.

The spelling of 162117547 in words is "one hundred sixty-two million, one hundred seventeen thousand, five hundred forty-seven".