8119561 has 4 divisors (see below), whose sum is σ = 8308432. Its totient is φ = 7930692.

The previous prime is 8119549. The next prime is 8119567. The reversal of 8119561 is 1659118.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8119561 - 2¹¹ = 8117513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8119567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94371 + ... + 94456.

It is an arithmetic number, because the mean of its divisors is an integer number (2077108).

Almost surely, 2^8119561 is an apocalyptic number.

It is an amenable number.

8119561 is a deficient number, since it is larger than the sum of its proper divisors (188871).

8119561 is a wasteful number, since it uses less digits than its factorization.

8119561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188870.

The product of its digits is 2160, while the sum is 31.

The square root of 8119561 is about 2849.4843393147. The cubic root of 8119561 is about 200.9914189880.

The spelling of 8119561 in words is "eight million, one hundred nineteen thousand, five hundred sixty-one".