5820121 has 2 divisors, whose sum is σ = 5820122. Its totient is φ = 5820120.

The previous prime is 5820119. The next prime is 5820131. The reversal of 5820121 is 1210285.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3370896 + 2449225 = 1836^2 + 1565^2 .

It is a cyclic number.

It is not a de Polignac number, because 5820121 - 2¹ = 5820119 is a prime.

Together with 5820119, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (5820131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2910060 + 2910061.

It is an arithmetic number, because the mean of its divisors is an integer number (2910061).

Almost surely, 2^5820121 is an apocalyptic number.

It is an amenable number.

5820121 is a deficient number, since it is larger than the sum of its proper divisors (1).

5820121 is an equidigital number, since it uses as much as digits as its factorization.

5820121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 5820121 is about 2412.4926942895. The cubic root of 5820121 is about 179.8777049954.

It can be divided in two parts, 58201 and 21, that multiplied together give a palindrome (1222221).

The spelling of 5820121 in words is "five million, eight hundred twenty thousand, one hundred twenty-one".