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56205029 = 102155049
BaseRepresentation
bin1101011001100…
…1111011100101
310220202111210202
43112121323211
5103342030104
65324400245
71251510026
oct326317345
9126674722
1056205029
11297a9741
12169a6085
13b84b81a
147670c4d
154e0351e
hex3599ee5

56205029 has 4 divisors (see below), whose sum is σ = 56261100. Its totient is φ = 56148960.

The previous prime is 56204969. The next prime is 56205041. The reversal of 56205029 is 92050265.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43230625 + 12974404 = 6575^2 + 3602^2 .

It is a cyclic number.

It is not a de Polignac number, because 56205029 - 28 = 56204773 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56204992 and 56205010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56205049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26504 + ... + 28545.

It is an arithmetic number, because the mean of its divisors is an integer number (14065275).

Almost surely, 256205029 is an apocalyptic number.

It is an amenable number.

56205029 is a deficient number, since it is larger than the sum of its proper divisors (56071).

56205029 is a wasteful number, since it uses less digits than its factorization.

56205029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56070.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 56205029 is about 7497.0013338668. The cubic root of 56205029 is about 383.0525802281.

The spelling of 56205029 in words is "fifty-six million, two hundred five thousand, twenty-nine".

Divisors: 1 1021 55049 56205029