49121 has 2 divisors, whose sum is σ = 49122. Its totient is φ = 49120.

The previous prime is 49117. The next prime is 49123. The reversal of 49121 is 12194.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30625 + 18496 = 175^2 + 136^2 .

It is a cyclic number.

It is not a de Polignac number, because 49121 - 2² = 49117 is a prime.

Together with 49123, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 49121.

It is not a weakly prime, because it can be changed into another prime (49123) 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 as a sum of consecutive naturals, namely, 24560 + 24561.

It is an arithmetic number, because the mean of its divisors is an integer number (24561).

2⁴⁹¹²¹ is an apocalyptic number.

It is an amenable number.

49121 is a deficient number, since it is larger than the sum of its proper divisors (1).

49121 is an equidigital number, since it uses as much as digits as its factorization.

49121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72, while the sum is 17.

The square root of 49121 is about 221.6325788326. The cubic root of 49121 is about 36.6231531566.

It can be divided in two parts, 4912 and 1, that added together give a cube (4913 = 17³).

The spelling of 49121 in words is "forty-nine thousand, one hundred twenty-one".