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253286049 = 384428683
BaseRepresentation
bin11110001100011…
…01011010100001
3122122121021010210
433012031122201
51004320123144
641044444333
76163616202
oct1706153241
9578537123
10253286049
1111aa78615
12709a96a9
1340623303
14258d35a9
1517382ab9
hexf18d6a1

253286049 has 4 divisors (see below), whose sum is σ = 337714736. Its totient is φ = 168857364.

The previous prime is 253285999. The next prime is 253286071. The reversal of 253286049 is 940682352.

It is a happy number.

253286049 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 253286049 - 211 = 253284001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 253285998 and 253286016.

It is not an unprimeable number, because it can be changed into a prime (253266049) 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, 42214339 + ... + 42214344.

It is an arithmetic number, because the mean of its divisors is an integer number (84428684).

Almost surely, 2253286049 is an apocalyptic number.

It is an amenable number.

253286049 is a deficient number, since it is larger than the sum of its proper divisors (84428687).

253286049 is an equidigital number, since it uses as much as digits as its factorization.

253286049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84428686.

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 253286049 is about 15914.9630536800. The cubic root of 253286049 is about 632.7086275587.

The spelling of 253286049 in words is "two hundred fifty-three million, two hundred eighty-six thousand, forty-nine".

Divisors: 1 3 84428683 253286049