4955286821 has 2 divisors, whose sum is σ = 4955286822. Its totient is φ = 4955286820.

The previous prime is 4955286799. The next prime is 4955286851. The reversal of 4955286821 is 1286825594.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4393833796 + 561453025 = 66286^2 + 23695^2 .

It is a cyclic number.

It is not a de Polignac number, because 4955286821 - 2⁶ = 4955286757 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4955286821.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4955286851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2477643410 + 2477643411.

It is an arithmetic number, because the mean of its divisors is an integer number (2477643411).

Almost surely, 2^4955286821 is an apocalyptic number.

It is an amenable number.

4955286821 is a deficient number, since it is larger than the sum of its proper divisors (1).

4955286821 is an equidigital number, since it uses as much as digits as its factorization.

4955286821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1382400, while the sum is 50.

The square root of 4955286821 is about 70393.7981714298. The cubic root of 4955286821 is about 1704.8634458049.

The spelling of 4955286821 in words is "four billion, nine hundred fifty-five million, two hundred eighty-six thousand, eight hundred twenty-one".