56117844 has 18 divisors (see below), whose sum is σ = 141853530. Its totient is φ = 18705936.

The previous prime is 56117839. The next prime is 56117869. The reversal of 56117844 is 44871165.

It is a happy number.

56117844 is a `hidden beast` number, since 561 + 17 + 84 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 37970244 + 18147600 = 6162^2 + 4260^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1558829 = 56117844 / (5 + 6 + 1 + 1 + 7 + 8 + 4 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 56117799 and 56117808.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 779379 + ... + 779450.

Almost surely, 2^56117844 is an apocalyptic number.

It is an amenable number.

56117844 is an abundant number, since it is smaller than the sum of its proper divisors (85735686).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56117844 is a wasteful number, since it uses less digits than its factorization.

56117844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1558839 (or 1558834 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 56117844 is about 7491.1844190355. The cubic root of 56117844 is about 382.8544145548.

The spelling of 56117844 in words is "fifty-six million, one hundred seventeen thousand, eight hundred forty-four".