161575127 has 4 divisors (see below), whose sum is σ = 184657296. Its totient is φ = 138492960.

The previous prime is 161575121. The next prime is 161575133. The reversal of 161575127 is 721575161.

161575127 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (161575121) and next prime (161575133).

It is a cyclic number.

It is not a de Polignac number, because 161575127 - 2⁸ = 161574871 is a prime.

It is a super-2 number, since 2×161575127² = 52213043330132258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161575121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11541074 + ... + 11541087.

It is an arithmetic number, because the mean of its divisors is an integer number (46164324).

Almost surely, 2^161575127 is an apocalyptic number.

161575127 is a deficient number, since it is larger than the sum of its proper divisors (23082169).

161575127 is an equidigital number, since it uses as much as digits as its factorization.

161575127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23082168.

The product of its digits is 14700, while the sum is 35.

The square root of 161575127 is about 12711.2205157491. The cubic root of 161575127 is about 544.6591893289.

The spelling of 161575127 in words is "one hundred sixty-one million, five hundred seventy-five thousand, one hundred twenty-seven".