161715546 has 12 divisors (see below), whose sum is σ = 350383722. Its totient is φ = 53905176.

The previous prime is 161715503. The next prime is 161715551. The reversal of 161715546 is 645517161.

It is a happy number.

161715546 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 124077321 + 37638225 = 11139^2 + 6135^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 161715546.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4492081 + ... + 4492116.

Almost surely, 2^161715546 is an apocalyptic number.

161715546 is an abundant number, since it is smaller than the sum of its proper divisors (188668176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161715546 is a wasteful number, since it uses less digits than its factorization.

161715546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8984205 (or 8984202 counting only the distinct ones).

The product of its digits is 25200, while the sum is 36.

The square root of 161715546 is about 12716.7427433286. The cubic root of 161715546 is about 544.8169247331.

It can be divided in two parts, 161715 and 546, that added together give a palindrome (162261).

The spelling of 161715546 in words is "one hundred sixty-one million, seven hundred fifteen thousand, five hundred forty-six".