8161265 has 16 divisors (see below), whose sum is σ = 11249280. Its totient is φ = 5568000.

The previous prime is 8161261. The next prime is 8161273. The reversal of 8161265 is 5621618.

8161265 = T₁₁₉ + T₁₂₀ + ... + T₃₆₉.

It is a happy number.

It is not a de Polignac number, because 8161265 - 2² = 8161261 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8161261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8321 + ... + 9249.

It is an arithmetic number, because the mean of its divisors is an integer number (703080).

Almost surely, 2^8161265 is an apocalyptic number.

It is an amenable number.

8161265 is a deficient number, since it is larger than the sum of its proper divisors (3088015).

8161265 is a wasteful number, since it uses less digits than its factorization.

8161265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1192.

The product of its digits is 2880, while the sum is 29.

The square root of 8161265 is about 2856.7927821247. The cubic root of 8161265 is about 201.3349447873.

The spelling of 8161265 in words is "eight million, one hundred sixty-one thousand, two hundred sixty-five".