56290109 has 4 divisors (see below), whose sum is σ = 56305116. Its totient is φ = 56275104.

The previous prime is 56290063. The next prime is 56290127. The reversal of 56290109 is 90109265.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 33756100 + 22534009 = 5810^2 + 4747^2 .

It is a cyclic number.

It is not a de Polignac number, because 56290109 - 2²⁰ = 55241533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56290709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3647 + ... + 11219.

It is an arithmetic number, because the mean of its divisors is an integer number (14076279).

Almost surely, 2^56290109 is an apocalyptic number.

It is an amenable number.

56290109 is a deficient number, since it is larger than the sum of its proper divisors (15007).

56290109 is an equidigital number, since it uses as much as digits as its factorization.

56290109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15006.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 56290109 is about 7502.6734568419. The cubic root of 56290109 is about 383.2457639079.

The spelling of 56290109 in words is "fifty-six million, two hundred ninety thousand, one hundred nine".