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253116395 = 5731792953
BaseRepresentation
bin11110001011000…
…11111111101011
3122122021122102022
433011203333223
51004244211040
641041055055
76162311450
oct1705437753
9578248368
10253116395
1111a972104
127092748b
134059401c
142588b827
151734c6b5
hexf163feb

253116395 has 32 divisors (see below), whose sum is σ = 362987520. Its totient is φ = 165784320.

The previous prime is 253116377. The next prime is 253116397. The reversal of 253116395 is 593611352.

It is not a de Polignac number, because 253116395 - 210 = 253115371 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is not an unprimeable number, because it can be changed into a prime (253116397) 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 31 ways as a sum of consecutive naturals, for example, 84239 + ... + 87191.

It is an arithmetic number, because the mean of its divisors is an integer number (11343360).

Almost surely, 2253116395 is an apocalyptic number.

253116395 is a deficient number, since it is larger than the sum of its proper divisors (109871125).

253116395 is a wasteful number, since it uses less digits than its factorization.

253116395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3075.

The product of its digits is 24300, while the sum is 35.

The square root of 253116395 is about 15909.6321453389. The cubic root of 253116395 is about 632.5673307587.

The spelling of 253116395 in words is "two hundred fifty-three million, one hundred sixteen thousand, three hundred ninety-five".

Divisors: 1 5 7 31 35 79 155 217 395 553 1085 2449 2765 2953 12245 14765 17143 20671 85715 91543 103355 233287 457715 640801 1166435 1633009 3204005 7231897 8165045 36159485 50623279 253116395