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55923889 = 723113457
BaseRepresentation
bin1101010101010…
…1010010110001
310220020020011011
43111111102301
5103304031024
65314350521
71246226260
oct325252261
9126206134
1055923889
112962749a
121688b441
13b780878
1475da5d7
154d9a094
hex35554b1

55923889 has 8 divisors (see below), whose sum is σ = 63959168. Its totient is φ = 47900160.

The previous prime is 55923883. The next prime is 55923911. The reversal of 55923889 is 98832955.

55923889 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 not a de Polignac number, because 55923889 - 211 = 55921841 is a prime.

It is a super-3 number, since 3×559238893 (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (55923883) 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, 14449 + ... + 17905.

It is an arithmetic number, because the mean of its divisors is an integer number (7994896).

Almost surely, 255923889 is an apocalyptic number.

It is an amenable number.

55923889 is a deficient number, since it is larger than the sum of its proper divisors (8035279).

55923889 is a wasteful number, since it uses less digits than its factorization.

55923889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5775.

The product of its digits is 777600, while the sum is 49.

The square root of 55923889 is about 7478.2276643601. The cubic root of 55923889 is about 382.4128304643.

The spelling of 55923889 in words is "fifty-five million, nine hundred twenty-three thousand, eight hundred eighty-nine".

Divisors: 1 7 2311 3457 16177 24199 7989127 55923889