56117109 has 8 divisors (see below), whose sum is σ = 75412480. Its totient is φ = 37116576.

The previous prime is 56117101. The next prime is 56117111. The reversal of 56117109 is 90171165.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56117109 - 2³ = 56117101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56117101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73264 + ... + 74025.

It is an arithmetic number, because the mean of its divisors is an integer number (9426560).

Almost surely, 2^56117109 is an apocalyptic number.

It is an amenable number.

56117109 is a deficient number, since it is larger than the sum of its proper divisors (19295371).

56117109 is a wasteful number, since it uses less digits than its factorization.

56117109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147419.

The product of its (nonzero) digits is 1890, while the sum is 30.

The square root of 56117109 is about 7491.1353612119. The cubic root of 56117109 is about 382.8527430768.

It can be divided in two parts, 5611 and 7109, that added together give a triangular number (12720 = T₁₅₉).

The spelling of 56117109 in words is "fifty-six million, one hundred seventeen thousand, one hundred nine".