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54878887 = 717345317
BaseRepresentation
bin1101000101011…
…0001010100111
310211021010200101
43101112022213
5103022111022
65240124531
71234314520
oct321261247
9124233611
1054878887
1128a83358
1216466747
13b4a601b
147407847
154c40627
hex34562a7

54878887 has 8 divisors (see below), whose sum is σ = 63082656. Its totient is φ = 46766112.

The previous prime is 54878867. The next prime is 54878917. The reversal of 54878887 is 78887845.

54878887 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 54878887 - 211 = 54876839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54878867) 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, 21448 + ... + 23869.

It is an arithmetic number, because the mean of its divisors is an integer number (7885332).

Almost surely, 254878887 is an apocalyptic number.

54878887 is a deficient number, since it is larger than the sum of its proper divisors (8203769).

54878887 is a wasteful number, since it uses less digits than its factorization.

54878887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45497.

The product of its digits is 4014080, while the sum is 55.

The square root of 54878887 is about 7408.0285501610. The cubic root of 54878887 is about 380.0158973035.

The spelling of 54878887 in words is "fifty-four million, eight hundred seventy-eight thousand, eight hundred eighty-seven".

Divisors: 1 7 173 1211 45317 317219 7839841 54878887