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54678385 = 528138917
BaseRepresentation
bin1101000010010…
…1001101110001
310210212221122101
43100211031301
5102444202020
65231540401
71232521126
oct320451561
9123787571
1054678385
1128956753
121638a701
13b435998
14739474d
154c0100a
hex3425371

54678385 has 8 divisors (see below), whose sum is σ = 65849256. Its totient is φ = 43585920.

The previous prime is 54678367. The next prime is 54678419. The reversal of 54678385 is 58387645.

It can be written as a sum of positive squares in 4 ways, for example, as 1912689 + 52765696 = 1383^2 + 7264^2 .

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

It is not a de Polignac number, because 54678385 - 221 = 52581233 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18054 + ... + 20863.

It is an arithmetic number, because the mean of its divisors is an integer number (8231157).

Almost surely, 254678385 is an apocalyptic number.

It is an amenable number.

54678385 is a deficient number, since it is larger than the sum of its proper divisors (11170871).

54678385 is a wasteful number, since it uses less digits than its factorization.

54678385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39203.

The product of its digits is 806400, while the sum is 46.

The square root of 54678385 is about 7394.4834167101. The cubic root of 54678385 is about 379.5525319253.

The spelling of 54678385 in words is "fifty-four million, six hundred seventy-eight thousand, three hundred eighty-five".

Divisors: 1 5 281 1405 38917 194585 10935677 54678385