56308109 has 16 divisors (see below), whose sum is σ = 66441984. Its totient is φ = 47044800.

The previous prime is 56308099. The next prime is 56308127. The reversal of 56308109 is 90180365.

It is not a de Polignac number, because 56308109 - 2¹² = 56304013 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56302109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38027 + ... + 39479.

It is an arithmetic number, because the mean of its divisors is an integer number (4152624).

Almost surely, 2^56308109 is an apocalyptic number.

It is an amenable number.

56308109 is a deficient number, since it is larger than the sum of its proper divisors (10133875).

56308109 is a wasteful number, since it uses less digits than its factorization.

56308109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1748.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 56308109 is about 7503.8729333591. The cubic root of 56308109 is about 383.2866099742.

The spelling of 56308109 in words is "fifty-six million, three hundred eight thousand, one hundred nine".