8155961 has 8 divisors (see below), whose sum is σ = 9284544. Its totient is φ = 7091920.

The previous prime is 8155949. The next prime is 8155967. The reversal of 8155961 is 1695518.

8155961 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8155961 - 2⁶ = 8155897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8155967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15866 + ... + 16371.

It is an arithmetic number, because the mean of its divisors is an integer number (1160568).

Almost surely, 2^8155961 is an apocalyptic number.

It is an amenable number.

8155961 is a deficient number, since it is larger than the sum of its proper divisors (1128583).

8155961 is a wasteful number, since it uses less digits than its factorization.

8155961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32271.

The product of its digits is 10800, while the sum is 35.

The square root of 8155961 is about 2855.8643175053. The cubic root of 8155961 is about 201.2913195254.

It can be divided in two parts, 815 and 5961, that added together give a palindrome (6776).

The spelling of 8155961 in words is "eight million, one hundred fifty-five thousand, nine hundred sixty-one".