8406553 has 2 divisors, whose sum is σ = 8406554. Its totient is φ = 8406552.

The previous prime is 8406547. The next prime is 8406577. The reversal of 8406553 is 3556048.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8311689 + 94864 = 2883^2 + 308^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8406553 is a prime.

It is not a weakly prime, because it can be changed into another prime (8406583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4203276 + 4203277.

It is an arithmetic number, because the mean of its divisors is an integer number (4203277).

Almost surely, 2^8406553 is an apocalyptic number.

It is an amenable number.

8406553 is a deficient number, since it is larger than the sum of its proper divisors (1).

8406553 is an equidigital number, since it uses as much as digits as its factorization.

8406553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 8406553 is about 2899.4056287453. The cubic root of 8406553 is about 203.3321183002.

The spelling of 8406553 in words is "eight million, four hundred six thousand, five hundred fifty-three".