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48121481 = 128337507
BaseRepresentation
bin1011011110010…
…0011010001001
310100112211021002
42313210122021
544304341411
64435224345
71123011602
oct267443211
9110484232
1048121481
1125188421
12141480b5
139c7b365
146568da9
15435833b
hex2de4689

48121481 has 4 divisors (see below), whose sum is σ = 48160272. Its totient is φ = 48082692.

The previous prime is 48121453. The next prime is 48121501. The reversal of 48121481 is 18412184.

It is a happy number.

48121481 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 48121481 - 26 = 48121417 is a prime.

It is a super-2 number, since 2×481214812 = 4631353867266722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (48121421) 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, 17471 + ... + 20036.

It is an arithmetic number, because the mean of its divisors is an integer number (12040068).

Almost surely, 248121481 is an apocalyptic number.

It is an amenable number.

48121481 is a deficient number, since it is larger than the sum of its proper divisors (38791).

48121481 is a wasteful number, since it uses less digits than its factorization.

48121481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38790.

The product of its digits is 2048, while the sum is 29.

The square root of 48121481 is about 6936.9648262046. The cubic root of 48121481 is about 363.7304514319.

The spelling of 48121481 in words is "forty-eight million, one hundred twenty-one thousand, four hundred eighty-one".

Divisors: 1 1283 37507 48121481