7128533 has 2 divisors, whose sum is σ = 7128534. Its totient is φ = 7128532.

The previous prime is 7128529. The next prime is 7128581. The reversal of 7128533 is 3358217.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6061444 + 1067089 = 2462^2 + 1033^2 .

It is an emirp because it is prime and its reverse (3358217) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7128533 - 2² = 7128529 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 7128496 and 7128505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7128503) 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, 3564266 + 3564267.

It is an arithmetic number, because the mean of its divisors is an integer number (3564267).

Almost surely, 2^7128533 is an apocalyptic number.

It is an amenable number.

7128533 is a deficient number, since it is larger than the sum of its proper divisors (1).

7128533 is an equidigital number, since it uses as much as digits as its factorization.

7128533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 29.

The square root of 7128533 is about 2669.9312725237. The cubic root of 7128533 is about 192.4568565820.

The spelling of 7128533 in words is "seven million, one hundred twenty-eight thousand, five hundred thirty-three".