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253161055 = 577233173
BaseRepresentation
bin11110001011011…
…10111001011111
3122122100220200101
433011232321133
51004302123210
641042041531
76162555610
oct1705567137
9578326611
10253161055
1111a9a2714
12709492a7
13405ab454
142589dc07
151735aa3a
hexf16ee5f

253161055 has 8 divisors (see below), whose sum is σ = 347192352. Its totient is φ = 173596128.

The previous prime is 253161053. The next prime is 253161061. The reversal of 253161055 is 550161352.

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 253161055 - 21 = 253161053 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 (253161053) 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, 3616552 + ... + 3616621.

It is an arithmetic number, because the mean of its divisors is an integer number (43399044).

Almost surely, 2253161055 is an apocalyptic number.

253161055 is a deficient number, since it is larger than the sum of its proper divisors (94031297).

253161055 is an equidigital number, since it uses as much as digits as its factorization.

253161055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7233185.

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 253161055 is about 15911.0356356838. The cubic root of 253161055 is about 632.6045320835.

The spelling of 253161055 in words is "two hundred fifty-three million, one hundred sixty-one thousand, fifty-five".

Divisors: 1 5 7 35 7233173 36165865 50632211 253161055