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55112879 = 1312571637
BaseRepresentation
bin1101001000111…
…1010010101111
310211201000122202
43102033102233
5103102103004
65245132115
71236310643
oct322172257
9124630582
1055112879
1129123138
121655a03b
13b558693
147468c23
154c89b1e
hex348f4af

55112879 has 8 divisors (see below), whose sum is σ = 55783728. Its totient is φ = 54446080.

The previous prime is 55112873. The next prime is 55112881. The reversal of 55112879 is 97821155.

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 55112879 - 212 = 55108783 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 (55112873) 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, 32849 + ... + 34485.

It is an arithmetic number, because the mean of its divisors is an integer number (6972966).

Almost surely, 255112879 is an apocalyptic number.

55112879 is a deficient number, since it is larger than the sum of its proper divisors (670849).

55112879 is a wasteful number, since it uses less digits than its factorization.

55112879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2025.

The product of its digits is 25200, while the sum is 38.

The square root of 55112879 is about 7423.8048869835. The cubic root of 55112879 is about 380.5552340354. Note that the first 3 decimals are identical.

The spelling of 55112879 in words is "fifty-five million, one hundred twelve thousand, eight hundred seventy-nine".

Divisors: 1 131 257 1637 33667 214447 420709 55112879