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56601215 = 5111029113
BaseRepresentation
bin1101011111101…
…0101001111111
310221111122021022
43113322221333
5103442214330
65341054355
71255050056
oct327725177
9127448238
1056601215
1129a4a370
1216b573bb
13b959c58
14773539d
154e80ae5
hex35faa7f

56601215 has 8 divisors (see below), whose sum is σ = 74096208. Its totient is φ = 41164480.

The previous prime is 56601203. The next prime is 56601221. The reversal of 56601215 is 51210665.

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

It is not a de Polignac number, because 56601215 - 26 = 56601151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 514502 + ... + 514611.

It is an arithmetic number, because the mean of its divisors is an integer number (9262026).

Almost surely, 256601215 is an apocalyptic number.

56601215 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

56601215 is a deficient number, since it is larger than the sum of its proper divisors (17494993).

56601215 is a wasteful number, since it uses less digits than its factorization.

56601215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1029129.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 56601215 is about 7523.3778982582. The cubic root of 56601215 is about 383.9505121953.

The spelling of 56601215 in words is "fifty-six million, six hundred one thousand, two hundred fifteen".

Divisors: 1 5 11 55 1029113 5145565 11320243 56601215