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206153053 = 757272329
BaseRepresentation
bin11000100100110…
…10010101011101
3112100220122211021
430102122111131
5410233344203
632242324141
75052162211
oct1422322535
9470818737
10206153053
11a6405927
1259059651
133392cb72
141d544941
15131725bd
hexc49a55d

206153053 has 4 divisors (see below), whose sum is σ = 206426140. Its totient is φ = 205879968.

The previous prime is 206153039. The next prime is 206153063. The reversal of 206153053 is 350351602.

It is a happy number.

206153053 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 70593604 + 135559449 = 8402^2 + 11643^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-206153053 is a prime.

It is a super-2 number, since 2×2061530532 = 84998162522441618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206153063) 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, 135408 + ... + 136921.

It is an arithmetic number, because the mean of its divisors is an integer number (51606535).

Almost surely, 2206153053 is an apocalyptic number.

It is an amenable number.

206153053 is a deficient number, since it is larger than the sum of its proper divisors (273087).

206153053 is an equidigital number, since it uses as much as digits as its factorization.

206153053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273086.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 206153053 is about 14358.0309583174. The cubic root of 206153053 is about 590.7402878370.

The spelling of 206153053 in words is "two hundred six million, one hundred fifty-three thousand, fifty-three".

Divisors: 1 757 272329 206153053