6550553 has 2 divisors, whose sum is σ = 6550554. Its totient is φ = 6550552.

The previous prime is 6550547. The next prime is 6550631. The reversal of 6550553 is 3550556.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5234944 + 1315609 = 2288^2 + 1147^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6550553 is a prime.

It is not a weakly prime, because it can be changed into another prime (6550513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3275276 + 3275277.

It is an arithmetic number, because the mean of its divisors is an integer number (3275277).

Almost surely, 2^6550553 is an apocalyptic number.

It is an amenable number.

6550553 is a deficient number, since it is larger than the sum of its proper divisors (1).

6550553 is an equidigital number, since it uses as much as digits as its factorization.

6550553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11250, while the sum is 29.

The square root of 6550553 is about 2559.4048136237. The cubic root of 6550553 is about 187.1081285295.

The spelling of 6550553 in words is "six million, five hundred fifty thousand, five hundred fifty-three".