161047575 has 48 divisors (see below), whose sum is σ = 318625440. Its totient is φ = 79280640.

The previous prime is 161047561. The next prime is 161047597. The reversal of 161047575 is 575740161.

It is not a de Polignac number, because 161047575 - 2¹⁸ = 160785431 is a prime.

It is a congruent number.

It is an unprimeable number.

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 in 47 ways as a sum of consecutive naturals, for example, 402 + ... + 17951.

It is an arithmetic number, because the mean of its divisors is an integer number (6638030).

Almost surely, 2^161047575 is an apocalyptic number.

161047575 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

161047575 is a deficient number, since it is larger than the sum of its proper divisors (157577865).

161047575 is a wasteful number, since it uses less digits than its factorization.

161047575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18385 (or 18374 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 36.

The square root of 161047575 is about 12690.4521196055. The cubic root of 161047575 is about 544.0657619011.

The spelling of 161047575 in words is "one hundred sixty-one million, forty-seven thousand, five hundred seventy-five".