55640107 has 8 divisors (see below), whose sum is σ = 56365632. Its totient is φ = 54918600.

The previous prime is 55640093. The next prime is 55640111. The reversal of 55640107 is 70104655.

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 55640107 - 2¹⁵ = 55607339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55640147) 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, 34632 + ... + 36202.

It is an arithmetic number, because the mean of its divisors is an integer number (7045704).

Almost surely, 2^55640107 is an apocalyptic number.

55640107 is a deficient number, since it is larger than the sum of its proper divisors (725525).

55640107 is a wasteful number, since it uses less digits than its factorization.

55640107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2009.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 55640107 is about 7459.2296519145. The cubic root of 55640107 is about 381.7648905507.

The spelling of 55640107 in words is "fifty-five million, six hundred forty thousand, one hundred seven".