161197875 has 24 divisors (see below), whose sum is σ = 290588064. Its totient is φ = 85971600.

The previous prime is 161197873. The next prime is 161197877. The reversal of 161197875 is 578791161.

It is an interprime number because it is at equal distance from previous prime (161197873) and next prime (161197877).

It is not a de Polignac number, because 161197875 - 2¹ = 161197873 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 161197875.

It is not an unprimeable number, because it can be changed into a prime (161197871) 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 23 ways as a sum of consecutive naturals, for example, 70519 + ... + 72768.

It is an arithmetic number, because the mean of its divisors is an integer number (12107836).

Almost surely, 2^161197875 is an apocalyptic number.

161197875 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

161197875 is a deficient number, since it is larger than the sum of its proper divisors (129390189).

161197875 is a wasteful number, since it uses less digits than its factorization.

161197875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143308 (or 143295 counting only the distinct ones).

The product of its digits is 105840, while the sum is 45.

The square root of 161197875 is about 12696.3725134386. The cubic root of 161197875 is about 544.2349617138.

The spelling of 161197875 in words is "one hundred sixty-one million, one hundred ninety-seven thousand, eight hundred seventy-five".