56105161 has 4 divisors (see below), whose sum is σ = 64120192. Its totient is φ = 48090132.

The previous prime is 56105149. The next prime is 56105167. The reversal of 56105161 is 16150165.

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 a de Polignac number, because none of the positive numbers 2^k-56105161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56105167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4007505 + ... + 4007518.

It is an arithmetic number, because the mean of its divisors is an integer number (16030048).

Almost surely, 2^56105161 is an apocalyptic number.

It is an amenable number.

56105161 is a deficient number, since it is larger than the sum of its proper divisors (8015031).

56105161 is an equidigital number, since it uses as much as digits as its factorization.

56105161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8015030.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 56105161 is about 7490.3378428479. The cubic root of 56105161 is about 382.8255698473.

The spelling of 56105161 in words is "fifty-six million, one hundred five thousand, one hundred sixty-one".