56109 has 8 divisors (see below), whose sum is σ = 76320. Its totient is φ = 36656.

The previous prime is 56101. The next prime is 56113. The reversal of 56109 is 90165.

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

It is a cyclic number.

It is not a de Polignac number, because 56109 - 2³ = 56101 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56101) 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, 19 + ... + 335.

It is an arithmetic number, because the mean of its divisors is an integer number (9540).

2⁵⁶¹⁰⁹ is an apocalyptic number.

56109 is a gapful number since it is divisible by the number (59) formed by its first and last digit.

It is an amenable number.

56109 is a deficient number, since it is larger than the sum of its proper divisors (20211).

56109 is a wasteful number, since it uses less digits than its factorization.

56109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379.

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 56109 is about 236.8733838995. The cubic root of 56109 is about 38.2834301271.

The spelling of 56109 in words is "fifty-six thousand, one hundred nine".