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253418223 = 397870853
BaseRepresentation
bin11110001101011…
…01101011101111
3122122211222110010
433012231223233
51004333340343
641051344303
76165006432
oct1706555357
9578758403
10253418223
11120058953
1270a52093
134066b516
1425929819
15173abd33
hexf1adaef

253418223 has 8 divisors (see below), whose sum is σ = 341374768. Its totient is φ = 167203584.

The previous prime is 253418197. The next prime is 253418237. The reversal of 253418223 is 322814352.

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

It is not a de Polignac number, because 253418223 - 224 = 236641007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253418423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 435136 + ... + 435717.

It is an arithmetic number, because the mean of its divisors is an integer number (42671846).

Almost surely, 2253418223 is an apocalyptic number.

253418223 is a deficient number, since it is larger than the sum of its proper divisors (87956545).

253418223 is an equidigital number, since it uses as much as digits as its factorization.

253418223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870953.

The product of its digits is 11520, while the sum is 30.

The square root of 253418223 is about 15919.1150193722. The cubic root of 253418223 is about 632.8186653178.

The spelling of 253418223 in words is "two hundred fifty-three million, four hundred eighteen thousand, two hundred twenty-three".

Divisors: 1 3 97 291 870853 2612559 84472741 253418223