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48925781 = 319971583
BaseRepresentation
bin1011101010100…
…0110001010101
310102001200112222
42322220301111
5100011111111
64504352125
71132601522
oct272506125
9112050488
1048925781
1125687733
1214475645
13a1a0488
1466d8149
1544667db
hex2ea8c55

48925781 has 8 divisors (see below), whose sum is σ = 50586624. Its totient is φ = 47270160.

The previous prime is 48925769. The next prime is 48925783. The reversal of 48925781 is 18752984.

48925781 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-48925781 is a prime.

It is a super-3 number, since 3×489257813 (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48925783) 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 7 ways as a sum of consecutive naturals, for example, 30116 + ... + 31698.

It is an arithmetic number, because the mean of its divisors is an integer number (6323328).

Almost surely, 248925781 is an apocalyptic number.

It is an amenable number.

48925781 is a deficient number, since it is larger than the sum of its proper divisors (1660843).

48925781 is a wasteful number, since it uses less digits than its factorization.

48925781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2611.

The product of its digits is 161280, while the sum is 44.

The square root of 48925781 is about 6994.6966338791. The cubic root of 48925781 is about 365.7457225333.

The spelling of 48925781 in words is "forty-eight million, nine hundred twenty-five thousand, seven hundred eighty-one".

Divisors: 1 31 997 1583 30907 49073 1578251 48925781