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253052245 = 550610449
BaseRepresentation
bin11110001010101…
…00010101010101
3122122011101102101
433011110111111
51004240132440
641035442101
76161623435
oct1705242525
9578141371
10253052245
1111a928996
12708b6331
1340570a74
14258722c5
151733869a
hexf154555

253052245 has 4 divisors (see below), whose sum is σ = 303662700. Its totient is φ = 202441792.

The previous prime is 253052243. The next prime is 253052269. The reversal of 253052245 is 542250352.

253052245 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 141158161 + 111894084 = 11881^2 + 10578^2 .

It is a cyclic number.

It is not a de Polignac number, because 253052245 - 21 = 253052243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253052243) 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, 25305220 + ... + 25305229.

It is an arithmetic number, because the mean of its divisors is an integer number (75915675).

Almost surely, 2253052245 is an apocalyptic number.

It is an amenable number.

253052245 is a deficient number, since it is larger than the sum of its proper divisors (50610455).

253052245 is an equidigital number, since it uses as much as digits as its factorization.

253052245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50610454.

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

The square root of 253052245 is about 15907.6159433147. The cubic root of 253052245 is about 632.5138868047.

The spelling of 253052245 in words is "two hundred fifty-three million, fifty-two thousand, two hundred forty-five".

Divisors: 1 5 50610449 253052245