56109508 has 108 divisors (see below), whose sum is σ = 131952492. Its totient is φ = 20684160.

The previous prime is 56109499. The next prime is 56109509. The reversal of 56109508 is 80590165.

It can be written as a sum of positive squares in 2 ways, for example, as 4528384 + 51581124 = 2128^2 + 7182^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56109509) 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 35 ways as a sum of consecutive naturals, for example, 919798 + ... + 919858.

Almost surely, 2^56109508 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56109508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65976246).

56109508 is an abundant number, since it is smaller than the sum of its proper divisors (75842984).

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

56109508 is a wasteful number, since it uses less digits than its factorization.

56109508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130 (or 102 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 34.

The square root of 56109508 is about 7490.6280110549. The cubic root of 56109508 is about 382.8354566369.

The spelling of 56109508 in words is "fifty-six million, one hundred nine thousand, five hundred eight".