55606109 has 8 divisors (see below), whose sum is σ = 59985912. Its totient is φ = 51240960.

The previous prime is 55606097. The next prime is 55606121. The reversal of 55606109 is 90160655.

It is an interprime number because it is at equal distance from previous prime (55606097) and next prime (55606121).

It can be written as a sum of positive squares in 4 ways, for example, as 994009 + 54612100 = 997^2 + 7390^2 .

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 55606109 - 2²⁰ = 54557533 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 (55606129) 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, 4997 + ... + 11669.

It is an arithmetic number, because the mean of its divisors is an integer number (7498239).

Almost surely, 2^55606109 is an apocalyptic number.

It is an amenable number.

55606109 is a deficient number, since it is larger than the sum of its proper divisors (4379803).

55606109 is a wasteful number, since it uses less digits than its factorization.

55606109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7327.

The product of its (nonzero) digits is 8100, while the sum is 32.

The square root of 55606109 is about 7456.9503820262. The cubic root of 55606109 is about 381.6871175920.

The spelling of 55606109 in words is "fifty-five million, six hundred six thousand, one hundred nine".