55638130 has 32 divisors (see below), whose sum is σ = 104696064. Its totient is φ = 21267456.

The previous prime is 55638113. The next prime is 55638139. The reversal of 55638130 is 3183655.

55638130 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 55638092 and 55638101.

It is not an unprimeable number, because it can be changed into a prime (55638139) 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 15 ways as a sum of consecutive naturals, for example, 18834 + ... + 21586.

It is an arithmetic number, because the mean of its divisors is an integer number (3271752).

Almost surely, 2^55638130 is an apocalyptic number.

55638130 is a deficient number, since it is larger than the sum of its proper divisors (49057934).

55638130 is a wasteful number, since it uses less digits than its factorization.

55638130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2850.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 55638130 is about 7459.0971303503. The cubic root of 55638130 is about 381.7603688836.

The spelling of 55638130 in words is "fifty-five million, six hundred thirty-eight thousand, one hundred thirty".