55650681 has 24 divisors (see below), whose sum is σ = 84240000. Its totient is φ = 35354592.

The previous prime is 55650667. The next prime is 55650709. The reversal of 55650681 is 18605655.

55650681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55650681 - 2⁵ = 55650649 is a prime.

It is a super-2 number, since 2×55650681² = 6193996591527522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55650631) 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 23 ways as a sum of consecutive naturals, for example, 19270 + ... + 21968.

It is an arithmetic number, because the mean of its divisors is an integer number (3510000).

Almost surely, 2^55650681 is an apocalyptic number.

It is an amenable number.

55650681 is a deficient number, since it is larger than the sum of its proper divisors (28589319).

55650681 is a wasteful number, since it uses less digits than its factorization.

55650681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2813 (or 2810 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The square root of 55650681 is about 7459.9384045714. The cubic root of 55650681 is about 381.7890729045.

The spelling of 55650681 in words is "fifty-five million, six hundred fifty thousand, six hundred eighty-one".