49091 has 4 divisors (see below), whose sum is σ = 56112.
Its totient is φ = 42072.
The previous prime is 49081. The next prime is 49103. The reversal of 49091 is 19094.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19094 = 2 ⋅9547.
It is a cyclic number.
It is not a de Polignac number, because 49091 - 214 = 32707 is a prime.
It is a plaindrome in base 12.
It is not an unprimeable number, because it can be changed into a prime (49031) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3500 + ... + 3513.
It is an arithmetic number, because the mean of its divisors is an integer number (14028).
249091 is an apocalyptic number.
49091 is a deficient number, since it is larger than the sum of its proper divisors (7021).
49091 is an equidigital number, since it uses as much as digits as its factorization.
49091 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 7020.
The product of its (nonzero) digits is 324, while the sum is 23.
The square root of 49091 is about 221.5648889152.
The cubic root of 49091 is about 36.6156959364.
The spelling of 49091 in words is "forty-nine thousand, ninety-one".