56006161 has 4 divisors (see below), whose sum is σ = 56061412. Its totient is φ = 55950912.

The previous prime is 56006141. The next prime is 56006183. The reversal of 56006161 is 16160065.

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 31809600 + 24196561 = 5640^2 + 4919^2 .

It is a cyclic number.

It is not a de Polignac number, because 56006161 - 2⁷ = 56006033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56006141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26076 + ... + 28141.

It is an arithmetic number, because the mean of its divisors is an integer number (14015353).

Almost surely, 2^56006161 is an apocalyptic number.

It is an amenable number.

56006161 is a deficient number, since it is larger than the sum of its proper divisors (55251).

56006161 is a wasteful number, since it uses less digits than its factorization.

56006161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55250.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 56006161 is about 7483.7264113542. The cubic root of 56006161 is about 382.6002664793.

The spelling of 56006161 in words is "fifty-six million, six thousand, one hundred sixty-one".