49805 has 8 divisors (see below), whose sum is σ = 68352. Its totient is φ = 34128.

The previous prime is 49801. The next prime is 49807. The reversal of 49805 is 50894.

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

It is a cyclic number.

It is not a de Polignac number, because 49805 - 2² = 49801 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 11.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 677 + ... + 746.

It is an arithmetic number, because the mean of its divisors is an integer number (8544).

2⁴⁹⁸⁰⁵ is an apocalyptic number.

It is an amenable number.

49805 is a deficient number, since it is larger than the sum of its proper divisors (18547).

49805 is a wasteful number, since it uses less digits than its factorization.

49805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1435.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 49805 is about 223.1703385309. The cubic root of 49805 is about 36.7923601815.

Subtracting 49805 from its reverse (50894), we obtain a square (1089 = 33²).

The spelling of 49805 in words is "forty-nine thousand, eight hundred five".