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253204255 = 550640851
BaseRepresentation
bin11110001011110…
…01011100011111
3122122110002221101
433011321130133
51004310014010
641043013531
76163125553
oct1705713437
9578402841
10253204255
1111aa22117
127096a2a7
13405c5005
14258b1863
151736873a
hexf17971f

253204255 has 4 divisors (see below), whose sum is σ = 303845112. Its totient is φ = 202563400.

The previous prime is 253204219. The next prime is 253204277. The reversal of 253204255 is 552402352.

253204255 is nontrivially palindromic in base 16.

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

It is not a de Polignac number, because 253204255 - 219 = 252679967 is a prime.

It is a super-2 number, since 2×2532042552 = 128224789500210050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25320421 + ... + 25320430.

It is an arithmetic number, because the mean of its divisors is an integer number (75961278).

Almost surely, 2253204255 is an apocalyptic number.

253204255 is a deficient number, since it is larger than the sum of its proper divisors (50640857).

253204255 is an equidigital number, since it uses as much as digits as its factorization.

253204255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50640856.

The product of its (nonzero) digits is 12000, while the sum is 28.

The square root of 253204255 is about 15912.3931261140. The cubic root of 253204255 is about 632.6405130805.

The spelling of 253204255 in words is "two hundred fifty-three million, two hundred four thousand, two hundred fifty-five".

Divisors: 1 5 50640851 253204255