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48159109 = 51899281
BaseRepresentation
bin1011011110110…
…1100110000101
310100121201212201
42313231212011
544312042414
64440114501
71123226365
oct267554605
9110551781
1048159109
1125203719
1214165a31
139c9251b
1465789a5
154364574
hex2ded985

48159109 has 4 divisors (see below), whose sum is σ = 48173580. Its totient is φ = 48144640.

The previous prime is 48159107. The next prime is 48159121. The reversal of 48159109 is 90195184.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 40678884 + 7480225 = 6378^2 + 2735^2 .

It is a cyclic number.

It is not a de Polignac number, because 48159109 - 21 = 48159107 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 (48159107) 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, 549 + ... + 9829.

It is an arithmetic number, because the mean of its divisors is an integer number (12043395).

Almost surely, 248159109 is an apocalyptic number.

It is an amenable number.

48159109 is a deficient number, since it is larger than the sum of its proper divisors (14471).

48159109 is an equidigital number, since it uses as much as digits as its factorization.

48159109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14470.

The product of its (nonzero) digits is 12960, while the sum is 37.

The square root of 48159109 is about 6939.6764333793. The cubic root of 48159109 is about 363.8252315826.

It can be divided in two parts, 4815 and 9109, that added together give a square (13924 = 1182).

The spelling of 48159109 in words is "forty-eight million, one hundred fifty-nine thousand, one hundred nine".

Divisors: 1 5189 9281 48159109