8625553 has 2 divisors, whose sum is σ = 8625554. Its totient is φ = 8625552.

The previous prime is 8625541. The next prime is 8625559. The reversal of 8625553 is 3555268.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5121169 + 3504384 = 2263^2 + 1872^2 .

It is a cyclic number.

It is not a de Polignac number, because 8625553 - 2⁵ = 8625521 is a prime.

It is not a weakly prime, because it can be changed into another prime (8625559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4312776 + 4312777.

It is an arithmetic number, because the mean of its divisors is an integer number (4312777).

Almost surely, 2^8625553 is an apocalyptic number.

It is an amenable number.

8625553 is a deficient number, since it is larger than the sum of its proper divisors (1).

8625553 is an equidigital number, since it uses as much as digits as its factorization.

8625553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36000, while the sum is 34.

The square root of 8625553 is about 2936.9291785809. The cubic root of 8625553 is about 205.0826793208.

The spelling of 8625553 in words is "eight million, six hundred twenty-five thousand, five hundred fifty-three".