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55578492 = 22323734139
BaseRepresentation
bin1101010000000…
…0111101111100
310212120200100200
43110000331330
5103212002432
65303123500
71243260264
oct324007574
9125520320
1055578492
1129410a42
1216743590
13b68c5a8
14754a7a4
154d2ca7c
hex3500f7c

55578492 has 36 divisors (see below), whose sum is σ = 140900760. Its totient is φ = 18472032.

The previous prime is 55578469. The next prime is 55578521. The reversal of 55578492 is 29487555.

55578492 is a `hidden beast` number, since 5 + 557 + 8 + 4 + 92 = 666.

55578492 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 11359 + ... + 15497.

It is an arithmetic number, because the mean of its divisors is an integer number (3913910).

Almost surely, 255578492 is an apocalyptic number.

It is an amenable number.

55578492 is an abundant number, since it is smaller than the sum of its proper divisors (85322268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55578492 is a wasteful number, since it uses less digits than its factorization.

55578492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4522 (or 4517 counting only the distinct ones).

The product of its digits is 504000, while the sum is 45.

The square root of 55578492 is about 7455.0983896928. The cubic root of 55578492 is about 381.6239183088.

The spelling of 55578492 in words is "fifty-five million, five hundred seventy-eight thousand, four hundred ninety-two".