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56105871 = 352335759
BaseRepresentation
bin1101011000000…
…1101110001111
310220120110210020
43112001232033
5103330341441
65322313223
71250614653
oct326015617
9126513706
1056105871
1129741198
1216958813
13b815653
147646a63
154dd3e66
hex3581b8f

56105871 has 8 divisors (see below), whose sum is σ = 74952960. Its totient is φ = 37331352.

The previous prime is 56105857. The next prime is 56105911. The reversal of 56105871 is 17850165.

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

It is not a de Polignac number, because 56105871 - 25 = 56105839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56105971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16311 + ... + 19448.

It is an arithmetic number, because the mean of its divisors is an integer number (9369120).

Almost surely, 256105871 is an apocalyptic number.

56105871 is a deficient number, since it is larger than the sum of its proper divisors (18847089).

56105871 is a wasteful number, since it uses less digits than its factorization.

56105871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36285.

The product of its (nonzero) digits is 8400, while the sum is 33.

The square root of 56105871 is about 7490.3852370889. The cubic root of 56105871 is about 382.8271847017.

The spelling of 56105871 in words is "fifty-six million, one hundred five thousand, eight hundred seventy-one".

Divisors: 1 3 523 1569 35759 107277 18701957 56105871