161715043 has 12 divisors (see below), whose sum is σ = 188385912. Its totient is φ = 138415200.

The previous prime is 161715041. The next prime is 161715053. The reversal of 161715043 is 340517161.

161715043 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 161715043 - 2¹ = 161715041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161715041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40068 + ... + 43918.

It is an arithmetic number, because the mean of its divisors is an integer number (15698826).

Almost surely, 2^161715043 is an apocalyptic number.

161715043 is a deficient number, since it is larger than the sum of its proper divisors (26670869).

161715043 is an equidigital number, since it uses as much as digits as its factorization.

161715043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4722 (or 4715 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 161715043 is about 12716.7229662362. The cubic root of 161715043 is about 544.8163598664.

The spelling of 161715043 in words is "one hundred sixty-one million, seven hundred fifteen thousand, forty-three".