55107638 has 8 divisors (see below), whose sum is σ = 87012120. Its totient is φ = 26103600.

The previous prime is 55107631. The next prime is 55107653. The reversal of 55107638 is 83670155.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×55107638³ (a number of 24 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55107598 and 55107607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55107631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 725063 + ... + 725138.

It is an arithmetic number, because the mean of its divisors is an integer number (10876515).

Almost surely, 2^55107638 is an apocalyptic number.

55107638 is a deficient number, since it is larger than the sum of its proper divisors (31904482).

55107638 is a wasteful number, since it uses less digits than its factorization.

55107638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1450222.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 55107638 is about 7423.4518924824. The cubic root of 55107638 is about 380.5431705925.

The spelling of 55107638 in words is "fifty-five million, one hundred seven thousand, six hundred thirty-eight".