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48142481 = 61789221
BaseRepresentation
bin1011011110100…
…1100010010001
310100120220001212
42313221202101
544311024411
64435505505
71123130042
oct267514221
9110526055
1048142481
11251a2182
1214158295
139c87a9a
1465728c9
15435e68b
hex2de9891

48142481 has 4 divisors (see below), whose sum is σ = 48931764. Its totient is φ = 47353200.

The previous prime is 48142469. The next prime is 48142529. The reversal of 48142481 is 18424184.

48142481 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.

It can be written as a sum of positive squares in 2 ways, for example, as 24910081 + 23232400 = 4991^2 + 4820^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-48142481 is a prime.

It is a super-2 number, since 2×481424812 = 4635396953670722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (48142421) 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, 394550 + ... + 394671.

It is an arithmetic number, because the mean of its divisors is an integer number (12232941).

Almost surely, 248142481 is an apocalyptic number.

It is an amenable number.

48142481 is a deficient number, since it is larger than the sum of its proper divisors (789283).

48142481 is an equidigital number, since it uses as much as digits as its factorization.

48142481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789282.

The product of its digits is 8192, while the sum is 32.

The square root of 48142481 is about 6938.4782913835. The cubic root of 48142481 is about 363.7833538536.

The spelling of 48142481 in words is "forty-eight million, one hundred forty-two thousand, four hundred eighty-one".

Divisors: 1 61 789221 48142481