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56056749 = 372669369
BaseRepresentation
bin1101010111010…
…1101110101101
310220110222101220
43111311232231
5103322303444
65321253553
71250321520
oct325655655
9126428356
1056056749
11297082a1
12169342b9
13b7c9198
147632bb7
154dc4619
hex3575bad

56056749 has 8 divisors (see below), whose sum is σ = 85419840. Its totient is φ = 32032416.

The previous prime is 56056697. The next prime is 56056751. The reversal of 56056749 is 94765065.

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

It is not a de Polignac number, because 56056749 - 28 = 56056493 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56056749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56056849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1334664 + ... + 1334705.

It is an arithmetic number, because the mean of its divisors is an integer number (10677480).

Almost surely, 256056749 is an apocalyptic number.

It is an amenable number.

56056749 is a deficient number, since it is larger than the sum of its proper divisors (29363091).

56056749 is a wasteful number, since it uses less digits than its factorization.

56056749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2669379.

The product of its (nonzero) digits is 226800, while the sum is 42.

The square root of 56056749 is about 7487.1055154846. The cubic root of 56056749 is about 382.7154273672.

The spelling of 56056749 in words is "fifty-six million, fifty-six thousand, seven hundred forty-nine".

Divisors: 1 3 7 21 2669369 8008107 18685583 56056749