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48871261 = 244120021
BaseRepresentation
bin1011101001101…
…1011101011101
310101221220202201
42322123131131
5100002340021
64503251501
71132253545
oct272333535
9111856681
1048871261
112564a77a
1214449b91
13a18170a
1466c2325
154455591
hex2e9b75d

48871261 has 4 divisors (see below), whose sum is σ = 48893724. Its totient is φ = 48848800.

The previous prime is 48871259. The next prime is 48871307. The reversal of 48871261 is 16217884.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3308761 + 45562500 = 1819^2 + 6750^2 .

It is a cyclic number.

It is not a de Polignac number, because 48871261 - 21 = 48871259 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 48871261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48871201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7570 + ... + 12451.

It is an arithmetic number, because the mean of its divisors is an integer number (12223431).

Almost surely, 248871261 is an apocalyptic number.

It is an amenable number.

48871261 is a deficient number, since it is larger than the sum of its proper divisors (22463).

48871261 is a wasteful number, since it uses less digits than its factorization.

48871261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22462.

The product of its digits is 21504, while the sum is 37.

The square root of 48871261 is about 6990.7983092062. The cubic root of 48871261 is about 365.6098168970.

The spelling of 48871261 in words is "forty-eight million, eight hundred seventy-one thousand, two hundred sixty-one".

Divisors: 1 2441 20021 48871261