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56830385 = 511366077
BaseRepresentation
bin1101100011001…
…0100110110001
310221221021122002
43120302212301
5104022033020
65350023345
71260023153
oct330624661
9127837562
1056830385
112a096567
1217047b55
13ba0a361
147794ad3
154ec8975
hex36329b1

56830385 has 4 divisors (see below), whose sum is σ = 68196468. Its totient is φ = 45464304.

The previous prime is 56830373. The next prime is 56830399. The reversal of 56830385 is 58303865.

56830385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58303865 = 511660773.

It can be written as a sum of positive squares in 2 ways, for example, as 38588944 + 18241441 = 6212^2 + 4271^2 .

It is a cyclic number.

It is not a de Polignac number, because 56830385 - 26 = 56830321 is a prime.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 5683034 + ... + 5683043.

It is an arithmetic number, because the mean of its divisors is an integer number (17049117).

Almost surely, 256830385 is an apocalyptic number.

It is an amenable number.

56830385 is a deficient number, since it is larger than the sum of its proper divisors (11366083).

56830385 is a wasteful number, since it uses less digits than its factorization.

56830385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11366082.

The product of its (nonzero) digits is 86400, while the sum is 38.

The square root of 56830385 is about 7538.5930384920. The cubic root of 56830385 is about 384.4680008070.

The spelling of 56830385 in words is "fifty-six million, eight hundred thirty thousand, three hundred eighty-five".

Divisors: 1 5 11366077 56830385