49861 has 8 divisors (see below), whose sum is σ = 60480. Its totient is φ = 40128.

The previous prime is 49853. The next prime is 49871. The reversal of 49861 is 16894.

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 49861 - 2³ = 49853 is a prime.

It is a super-2 number, since 2×49861² = 4972238642, which contains 22 as substring.

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, 91 + ... + 328.

It is an arithmetic number, because the mean of its divisors is an integer number (7560).

2⁴⁹⁸⁶¹ is an apocalyptic number.

It is an amenable number.

49861 is a deficient number, since it is larger than the sum of its proper divisors (10619).

49861 is a wasteful number, since it uses less digits than its factorization.

49861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443.

The product of its digits is 1728, while the sum is 28.

The square root of 49861 is about 223.2957679850. The cubic root of 49861 is about 36.8061446104.

The spelling of 49861 in words is "forty-nine thousand, eight hundred sixty-one".