55649645 has 8 divisors (see below), whose sum is σ = 68200704. Its totient is φ = 43572304.

The previous prime is 55649641. The next prime is 55649663. The reversal of 55649645 is 54694655.

55649645 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 55649645 - 2² = 55649641 is a prime.

It is a super-3 number, since 3×55649645³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55649596 and 55649605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55649641) 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, 118169 + ... + 118638.

It is an arithmetic number, because the mean of its divisors is an integer number (8525088).

Almost surely, 2^55649645 is an apocalyptic number.

It is an amenable number.

55649645 is a deficient number, since it is larger than the sum of its proper divisors (12551059).

55649645 is a wasteful number, since it uses less digits than its factorization.

55649645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236859.

The product of its digits is 648000, while the sum is 44.

The square root of 55649645 is about 7459.8689666776. The cubic root of 55649645 is about 381.7867037456.

The spelling of 55649645 in words is "fifty-five million, six hundred forty-nine thousand, six hundred forty-five".