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245842253 = 17137105557
BaseRepresentation
bin11101010011101…
…00000101001101
3122010121002011122
432221310011031
51000413423003
640221130325
76043424156
oct1651640515
9563532148
10245842253
11116853a18
126a3b99a5
133bc180b7
142491692d
15168b2238
hexea7414d

245842253 has 8 divisors (see below), whose sum is σ = 262206072. Its totient is φ = 229689856.

The previous prime is 245842217. The next prime is 245842271. The reversal of 245842253 is 352248542.

It is a happy number.

245842253 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 4 ways, for example, as 98049604 + 147792649 = 9902^2 + 12157^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 245842253 - 220 = 244793677 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245842283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50450 + ... + 55107.

It is an arithmetic number, because the mean of its divisors is an integer number (32775759).

Almost surely, 2245842253 is an apocalyptic number.

It is an amenable number.

245842253 is a deficient number, since it is larger than the sum of its proper divisors (16363819).

245842253 is a wasteful number, since it uses less digits than its factorization.

245842253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105711.

The product of its digits is 76800, while the sum is 35.

The square root of 245842253 is about 15679.3575442363. The cubic root of 245842253 is about 626.4486953497.

The spelling of 245842253 in words is "two hundred forty-five million, eight hundred forty-two thousand, two hundred fifty-three".

Divisors: 1 17 137 2329 105557 1794469 14461309 245842253