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54723109 = 77817587
BaseRepresentation
bin1101000011000…
…0001000100101
310210222012222211
43100300020211
5103002114414
65232523421
71233065410
oct320601045
9123865884
1054723109
1128987311
12163b0571
13b45014c
1473a6b77
154c0e3c4
hex3430225

54723109 has 4 divisors (see below), whose sum is σ = 62540704. Its totient is φ = 46905516.

The previous prime is 54723107. The next prime is 54723127. The reversal of 54723109 is 90132745.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 54723109 - 21 = 54723107 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 (54723101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3908787 + ... + 3908800.

It is an arithmetic number, because the mean of its divisors is an integer number (15635176).

Almost surely, 254723109 is an apocalyptic number.

It is an amenable number.

54723109 is a deficient number, since it is larger than the sum of its proper divisors (7817595).

54723109 is an equidigital number, since it uses as much as digits as its factorization.

54723109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7817594.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 54723109 is about 7397.5069449106. The cubic root of 54723109 is about 379.6559882929.

The spelling of 54723109 in words is "fifty-four million, seven hundred twenty-three thousand, one hundred nine".

Divisors: 1 7 7817587 54723109