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55160281 = 1147106693
BaseRepresentation
bin1101001001101…
…0110111011001
310211210102200101
43102122313121
5103110112111
65250135401
71236566101
oct322326731
9124712611
1055160281
1129155810
1216581561
13b574127
14747c201
154c98bc1
hex349add9

55160281 has 8 divisors (see below), whose sum is σ = 61455744. Its totient is φ = 49078320.

The previous prime is 55160269. The next prime is 55160297. The reversal of 55160281 is 18206155.

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 55160281 - 225 = 21605849 is a prime.

It is a super-2 number, since 2×551602812 = 6085313199997922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55160201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52830 + ... + 53863.

It is an arithmetic number, because the mean of its divisors is an integer number (7681968).

Almost surely, 255160281 is an apocalyptic number.

It is an amenable number.

55160281 is a deficient number, since it is larger than the sum of its proper divisors (6295463).

55160281 is a wasteful number, since it uses less digits than its factorization.

55160281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106751.

The product of its (nonzero) digits is 2400, while the sum is 28.

The square root of 55160281 is about 7426.9967685465. The cubic root of 55160281 is about 380.6643066046.

The spelling of 55160281 in words is "fifty-five million, one hundred sixty thousand, two hundred eighty-one".

Divisors: 1 11 47 517 106693 1173623 5014571 55160281