55658909 has 8 divisors (see below), whose sum is σ = 56453760. Its totient is φ = 54868000.

The previous prime is 55658903. The next prime is 55658921. The reversal of 55658909 is 90985655.

55658909 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 55658909 - 2¹² = 55654813 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 (55658903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37634 + ... + 39084.

It is an arithmetic number, because the mean of its divisors is an integer number (7056720).

Almost surely, 2^55658909 is an apocalyptic number.

It is an amenable number.

55658909 is a deficient number, since it is larger than the sum of its proper divisors (794851).

55658909 is a wasteful number, since it uses less digits than its factorization.

55658909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1971.

The product of its (nonzero) digits is 486000, while the sum is 47.

The square root of 55658909 is about 7460.4898632731. The cubic root of 55658909 is about 381.8078879225.

The spelling of 55658909 in words is "fifty-five million, six hundred fifty-eight thousand, nine hundred nine".