88120161 has 6 divisors (see below), whose sum is σ = 127284690. Its totient is φ = 58746768.

The previous prime is 88120147. The next prime is 88120189. The reversal of 88120161 is 16102188.

It can be written as a sum of positive squares in only one way, i.e., 62110161 + 26010000 = 7881^2 + 5100^2 .

It is not a de Polignac number, because 88120161 - 2⁷ = 88120033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (88120121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4895556 + ... + 4895573.

It is an arithmetic number, because the mean of its divisors is an integer number (21214115).

Almost surely, 2^88120161 is an apocalyptic number.

It is an amenable number.

88120161 is a deficient number, since it is larger than the sum of its proper divisors (39164529).

88120161 is a wasteful number, since it uses less digits than its factorization.

88120161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9791135 (or 9791132 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 27.

The square root of 88120161 is about 9387.2339376411. The cubic root of 88120161 is about 444.9983773033.

The spelling of 88120161 in words is "eighty-eight million, one hundred twenty thousand, one hundred sixty-one".