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55708105 = 511141621
BaseRepresentation
bin1101010010000…
…0100111001001
310212211021011011
43110200213021
5103230124410
65310003521
71244340205
oct324404711
9125737134
1055708105
112949a362
12167a65a1
13b70659b
147581b05
154d5618a
hex35209c9

55708105 has 4 divisors (see below), whose sum is σ = 66849732. Its totient is φ = 44566480.

The previous prime is 55708097. The next prime is 55708109. The reversal of 55708105 is 50180755.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50180755 = 510036151.

It can be written as a sum of positive squares in 2 ways, for example, as 32936121 + 22771984 = 5739^2 + 4772^2 .

It is not a de Polignac number, because 55708105 - 23 = 55708097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55708109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5570806 + ... + 5570815.

It is an arithmetic number, because the mean of its divisors is an integer number (16712433).

Almost surely, 255708105 is an apocalyptic number.

It is an amenable number.

55708105 is a deficient number, since it is larger than the sum of its proper divisors (11141627).

55708105 is a wasteful number, since it uses less digits than its factorization.

55708105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11141626.

The product of its (nonzero) digits is 7000, while the sum is 31.

The square root of 55708105 is about 7463.7862375607. The cubic root of 55708105 is about 381.9203460464.

The spelling of 55708105 in words is "fifty-five million, seven hundred eight thousand, one hundred five".

Divisors: 1 5 11141621 55708105