8355161 has 4 divisors (see below), whose sum is σ = 8643300. Its totient is φ = 8067024.

The previous prime is 8355133. The next prime is 8355173. The reversal of 8355161 is 1615538.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5569600 + 2785561 = 2360^2 + 1669^2 .

It is a cyclic number.

It is not a de Polignac number, because 8355161 - 2¹⁸ = 8093017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 288109 = 8355161 / (8 + 3 + 5 + 5 + 1 + 6 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8355131) 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 3 ways as a sum of consecutive naturals, for example, 144026 + ... + 144083.

It is an arithmetic number, because the mean of its divisors is an integer number (2160825).

Almost surely, 2^8355161 is an apocalyptic number.

It is an amenable number.

8355161 is a deficient number, since it is larger than the sum of its proper divisors (288139).

8355161 is a wasteful number, since it uses less digits than its factorization.

8355161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288138.

The product of its digits is 3600, while the sum is 29.

The square root of 8355161 is about 2890.5295362615. The cubic root of 8355161 is about 202.9169258955.

The spelling of 8355161 in words is "eight million, three hundred fifty-five thousand, one hundred sixty-one".