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49281 = 316427
BaseRepresentation
bin1100000010000001
32111121020
430002001
53034111
61020053
7263451
oct140201
974536
1049281
1134031
1224629
131957b
1413d61
15e906
hexc081

49281 has 4 divisors (see below), whose sum is σ = 65712. Its totient is φ = 32852.

The previous prime is 49279. The next prime is 49297. The reversal of 49281 is 18294.

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 49281 - 21 = 49279 is a prime.

It is a super-2 number, since 2×492812 = 4857233922, which contains 22 as substring.

It is a D-number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (49201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8211 + ... + 8216.

It is an arithmetic number, because the mean of its divisors is an integer number (16428).

249281 is an apocalyptic number.

It is an amenable number.

49281 is a deficient number, since it is larger than the sum of its proper divisors (16431).

49281 is a wasteful number, since it uses less digits than its factorization.

49281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16430.

The product of its digits is 576, while the sum is 24.

The square root of 49281 is about 221.9932431404. The cubic root of 49281 is about 36.6628738042.

The spelling of 49281 in words is "forty-nine thousand, two hundred eighty-one".

Divisors: 1 3 16427 49281