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49891 is a prime number
BaseRepresentation
bin1100001011100011
32112102211
430023203
53044031
61022551
7265312
oct141343
975384
1049891
1134536
1224a57
131992a
1414279
15ebb1
hexc2e3

49891 has 2 divisors, whose sum is σ = 49892. Its totient is φ = 49890.

The previous prime is 49877. The next prime is 49919. The reversal of 49891 is 19894.

49891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49891 - 211 = 47843 is a prime.

It is a super-2 number, since 2×498912 = 4978223762, which contains 22 as substring.

It is a Chen prime.

It is a d-powerful number, because it can be written as 47 + 9 + 85 + 93 + 1 .

It is a nialpdrome in base 15.

It is not a weakly prime, because it can be changed into another prime (49801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24945 + 24946.

It is an arithmetic number, because the mean of its divisors is an integer number (24946).

249891 is an apocalyptic number.

49891 is a deficient number, since it is larger than the sum of its proper divisors (1).

49891 is an equidigital number, since it uses as much as digits as its factorization.

49891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 31.

The square root of 49891 is about 223.3629333618. The cubic root of 49891 is about 36.8135248806.

The spelling of 49891 in words is "forty-nine thousand, eight hundred ninety-one".