56983109 has 16 divisors (see below), whose sum is σ = 62052480. Its totient is φ = 52153920.

The previous prime is 56983103. The next prime is 56983111. The reversal of 56983109 is 90138965.

It is a cyclic number.

It is not a de Polignac number, because 56983109 - 2⁸ = 56982853 is a prime.

It is a super-2 number, since 2×56983109² = 6494149422611762, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56983103) 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, 71099 + ... + 71895.

It is an arithmetic number, because the mean of its divisors is an integer number (3878280).

Almost surely, 2^56983109 is an apocalyptic number.

It is an amenable number.

56983109 is a deficient number, since it is larger than the sum of its proper divisors (5069371).

56983109 is a wasteful number, since it uses less digits than its factorization.

56983109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 940.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 56983109 is about 7548.7157185842. The cubic root of 56983109 is about 384.8120947331.

Adding to 56983109 its sum of digits (41), we get a triangular number (56983150 = T₁₀₆₇₅).

The spelling of 56983109 in words is "fifty-six million, nine hundred eighty-three thousand, one hundred nine".