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253617213 = 3404920879
BaseRepresentation
bin11110001110111…
…10010000111101
3122200020002102010
433013132100331
51004411222323
641055521433
76166465533
oct1707362075
9580202363
10253617213
11120184403
1270b29279
134070ac75
142597c153
15173eac93
hexf1de43d

253617213 has 8 divisors (see below), whose sum is σ = 338256000. Its totient is φ = 169028288.

The previous prime is 253617211. The next prime is 253617229. The reversal of 253617213 is 312716352.

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

It is a cyclic number.

It is not a de Polignac number, because 253617213 - 21 = 253617211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253617211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1708 + ... + 22586.

It is an arithmetic number, because the mean of its divisors is an integer number (42282000).

Almost surely, 2253617213 is an apocalyptic number.

It is an amenable number.

253617213 is a deficient number, since it is larger than the sum of its proper divisors (84638787).

253617213 is a wasteful number, since it uses less digits than its factorization.

253617213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24931.

The product of its digits is 7560, while the sum is 30.

The square root of 253617213 is about 15925.3638262992. The cubic root of 253617213 is about 632.9842567256.

The spelling of 253617213 in words is "two hundred fifty-three million, six hundred seventeen thousand, two hundred thirteen".

Divisors: 1 3 4049 12147 20879 62637 84539071 253617213