56111641 has 4 divisors (see below), whose sum is σ = 56356900. Its totient is φ = 55866384.

The previous prime is 56111639. The next prime is 56111677. The reversal of 56111641 is 14611165.

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 55071241 + 1040400 = 7421^2 + 1020^2 .

It is a cyclic number.

It is not a de Polignac number, because 56111641 - 2¹ = 56111639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56111141) 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, 122286 + ... + 122743.

It is an arithmetic number, because the mean of its divisors is an integer number (14089225).

Almost surely, 2^56111641 is an apocalyptic number.

It is an amenable number.

56111641 is a deficient number, since it is larger than the sum of its proper divisors (245259).

56111641 is a wasteful number, since it uses less digits than its factorization.

56111641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245258.

The product of its digits is 720, while the sum is 25.

The square root of 56111641 is about 7490.7703876170. The cubic root of 56111641 is about 382.8403077320.

It can be divided in two parts, 5611164 and 1, that added together give a palindrome (5611165).

The spelling of 56111641 in words is "fifty-six million, one hundred eleven thousand, six hundred forty-one".