6423553 has 2 divisors, whose sum is σ = 6423554. Its totient is φ = 6423552.

The previous prime is 6423551. The next prime is 6423559. The reversal of 6423553 is 3553246.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3968064 + 2455489 = 1992^2 + 1567^2 .

It is a cyclic number.

It is not a de Polignac number, because 6423553 - 2¹ = 6423551 is a prime.

Together with 6423551, it forms a pair of twin primes.

6423553 is a lucky number.

It is equal to p₄₃₉₉₀₃ and since 6423553 and 439903 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (6423551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3211776 + 3211777.

It is an arithmetic number, because the mean of its divisors is an integer number (3211777).

Almost surely, 2^6423553 is an apocalyptic number.

It is an amenable number.

6423553 is a deficient number, since it is larger than the sum of its proper divisors (1).

6423553 is an equidigital number, since it uses as much as digits as its factorization.

6423553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10800, while the sum is 28.

The square root of 6423553 is about 2534.4729235089. The cubic root of 6423553 is about 185.8910314827.

Adding to 6423553 its reverse (3553246), we get a palindrome (9976799).

The spelling of 6423553 in words is "six million, four hundred twenty-three thousand, five hundred fifty-three".