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56021825 = 523177069
BaseRepresentation
bin1101010110110…
…1001101000001
310220102012111102
43111231031001
5103320144300
65320424145
71250114636
oct325551501
9126365442
1056021825
1129694032
1216918055
13b7b6312
14762418d
154db90d5
hex356d341

56021825 has 12 divisors (see below), whose sum is σ = 69696060. Its totient is φ = 44669760.

The previous prime is 56021773. The next prime is 56021827. The reversal of 56021825 is 52812065.

56021825 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 12475024 + 43546801 = 3532^2 + 6599^2 .

It is not a de Polignac number, because 56021825 - 26 = 56021761 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56021827) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 4391 + ... + 11459.

It is an arithmetic number, because the mean of its divisors is an integer number (5808005).

Almost surely, 256021825 is an apocalyptic number.

It is an amenable number.

56021825 is a deficient number, since it is larger than the sum of its proper divisors (13674235).

56021825 is a wasteful number, since it uses less digits than its factorization.

56021825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7396 (or 7391 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 56021825 is about 7484.7728756456. The cubic root of 56021825 is about 382.6359321503.

The spelling of 56021825 in words is "fifty-six million, twenty-one thousand, eight hundred twenty-five".

Divisors: 1 5 25 317 1585 7069 7925 35345 176725 2240873 11204365 56021825