6420053 has 2 divisors, whose sum is σ = 6420054. Its totient is φ = 6420052.

The previous prime is 6420041. The next prime is 6420061. The reversal of 6420053 is 3500246.

6420053 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5484964 + 935089 = 2342^2 + 967^2 .

It is a cyclic number.

It is not a de Polignac number, because 6420053 - 2⁶ = 6419989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6420023) 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, 3210026 + 3210027.

It is an arithmetic number, because the mean of its divisors is an integer number (3210027).

Almost surely, 2^6420053 is an apocalyptic number.

It is an amenable number.

6420053 is a deficient number, since it is larger than the sum of its proper divisors (1).

6420053 is an equidigital number, since it uses as much as digits as its factorization.

6420053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 6420053 is about 2533.7823505582. The cubic root of 6420053 is about 185.8572632128.

Adding to 6420053 its reverse (3500246), we get a palindrome (9920299).

The spelling of 6420053 in words is "six million, four hundred twenty thousand, fifty-three".