5955821 has 2 divisors, whose sum is σ = 5955822. Its totient is φ = 5955820.

The previous prime is 5955773. The next prime is 5955823. The reversal of 5955821 is 1285595.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4778596 + 1177225 = 2186^2 + 1085^2 .

It is a cyclic number.

It is not a de Polignac number, because 5955821 - 2¹⁰ = 5954797 is a prime.

Together with 5955823, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5955823) 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, 2977910 + 2977911.

It is an arithmetic number, because the mean of its divisors is an integer number (2977911).

Almost surely, 2^5955821 is an apocalyptic number.

It is an amenable number.

5955821 is a deficient number, since it is larger than the sum of its proper divisors (1).

5955821 is an equidigital number, since it uses as much as digits as its factorization.

5955821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18000, while the sum is 35.

The square root of 5955821 is about 2440.4550805126. The cubic root of 5955821 is about 181.2649680861.

It can be divided in two parts, 5955 and 821, that added together give a palindrome (6776).

The spelling of 5955821 in words is "five million, nine hundred fifty-five thousand, eight hundred twenty-one".