7133561 has 2 divisors, whose sum is σ = 7133562. Its totient is φ = 7133560.

The previous prime is 7133551. The next prime is 7133587. The reversal of 7133561 is 1653317.

It is a happy number.

It is an a-pointer prime, because the next prime (7133587) can be obtained adding 7133561 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7123561 + 10000 = 2669^2 + 100^2 .

It is an emirp because it is prime and its reverse (1653317) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7133561 - 2¹⁴ = 7117177 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7133561.

It is not a weakly prime, because it can be changed into another prime (7133521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3566780 + 3566781.

It is an arithmetic number, because the mean of its divisors is an integer number (3566781).

Almost surely, 2^7133561 is an apocalyptic number.

It is an amenable number.

7133561 is a deficient number, since it is larger than the sum of its proper divisors (1).

7133561 is an equidigital number, since it uses as much as digits as its factorization.

7133561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1890, while the sum is 26.

The square root of 7133561 is about 2670.8727038180. The cubic root of 7133561 is about 192.5020947655.

Adding to 7133561 its reverse (1653317), we get a palindrome (8786878).

The spelling of 7133561 in words is "seven million, one hundred thirty-three thousand, five hundred sixty-one".