56109313 has 8 divisors (see below), whose sum is σ = 60681600. Its totient is φ = 51573648.

The previous prime is 56109311. The next prime is 56109323. The reversal of 56109313 is 31390165.

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 56109313 - 2¹ = 56109311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56109311) 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, 5923 + ... + 12136.

It is an arithmetic number, because the mean of its divisors is an integer number (7585200).

Almost surely, 2^56109313 is an apocalyptic number.

It is an amenable number.

56109313 is a deficient number, since it is larger than the sum of its proper divisors (4572287).

56109313 is a wasteful number, since it uses less digits than its factorization.

56109313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18311.

The product of its (nonzero) digits is 2430, while the sum is 28.

The square root of 56109313 is about 7490.6149947785. The cubic root of 56109313 is about 382.8350131411.

Adding to 56109313 its reverse (31390165), we get a palindrome (87499478).

The spelling of 56109313 in words is "fifty-six million, one hundred nine thousand, three hundred thirteen".