8161172 has 6 divisors (see below), whose sum is σ = 14282058. Its totient is φ = 4080584.

The previous prime is 8161121. The next prime is 8161183. The reversal of 8161172 is 2711618.

It can be written as a sum of positive squares in only one way, i.e., 4343056 + 3818116 = 2084^2 + 1954^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1020143 + ... + 1020150.

It is an arithmetic number, because the mean of its divisors is an integer number (2380343).

Almost surely, 2^8161172 is an apocalyptic number.

It is an amenable number.

8161172 is a deficient number, since it is larger than the sum of its proper divisors (6120886).

8161172 is a wasteful number, since it uses less digits than its factorization.

8161172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2040297 (or 2040295 counting only the distinct ones).

The product of its digits is 672, while the sum is 26.

The square root of 8161172 is about 2856.7765050840. The cubic root of 8161172 is about 201.3341800275.

The spelling of 8161172 in words is "eight million, one hundred sixty-one thousand, one hundred seventy-two".