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56875285 = 517669121
BaseRepresentation
bin1101100011110…
…1100100010101
310222000120020001
43120331210111
5104030002120
65351011301
71260301105
oct330754425
9128016201
1056875285
112a117275
1217069b31
13ba2491c
1477a7205
154ed6e0a
hex363d915

56875285 has 8 divisors (see below), whose sum is σ = 72265176. Its totient is φ = 42823680.

The previous prime is 56875267. The next prime is 56875309. The reversal of 56875285 is 58257865.

It can be written as a sum of positive squares in 4 ways, for example, as 12439729 + 44435556 = 3527^2 + 6666^2 .

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

It is not a de Polignac number, because 56875285 - 27 = 56875157 is a prime.

It is a Duffinian number.

It is a congruent 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, 334476 + ... + 334645.

It is an arithmetic number, because the mean of its divisors is an integer number (9033147).

Almost surely, 256875285 is an apocalyptic number.

It is an amenable number.

56875285 is a deficient number, since it is larger than the sum of its proper divisors (15389891).

56875285 is a wasteful number, since it uses less digits than its factorization.

56875285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669143.

The product of its digits is 672000, while the sum is 46.

The square root of 56875285 is about 7541.5704597915. The cubic root of 56875285 is about 384.5692264043.

The spelling of 56875285 in words is "fifty-six million, eight hundred seventy-five thousand, two hundred eighty-five".

Divisors: 1 5 17 85 669121 3345605 11375057 56875285