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55545097 = 121745641
BaseRepresentation
bin1101001111100…
…0110100001001
310212111222112211
43103320310021
5103204420342
65302305121
71243061026
oct323706411
9125458484
1055545097
1129398943
12167281a1
13b67a32a
14753c54d
154d22c17
hex34f8d09

55545097 has 4 divisors (see below), whose sum is σ = 55591956. Its totient is φ = 55498240.

The previous prime is 55545089. The next prime is 55545107. The reversal of 55545097 is 79054555.

55545097 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79054555 = 515810911.

It can be written as a sum of positive squares in 2 ways, for example, as 22240656 + 33304441 = 4716^2 + 5771^2 .

It is a cyclic number.

It is not a de Polignac number, because 55545097 - 23 = 55545089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55545067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21604 + ... + 24037.

It is an arithmetic number, because the mean of its divisors is an integer number (13897989).

Almost surely, 255545097 is an apocalyptic number.

It is an amenable number.

55545097 is a deficient number, since it is larger than the sum of its proper divisors (46859).

55545097 is a wasteful number, since it uses less digits than its factorization.

55545097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46858.

The product of its (nonzero) digits is 157500, while the sum is 40.

The square root of 55545097 is about 7452.8583107423. The cubic root of 55545097 is about 381.5474685668.

The spelling of 55545097 in words is "fifty-five million, five hundred forty-five thousand, ninety-seven".

Divisors: 1 1217 45641 55545097