7003561 has 2 divisors, whose sum is σ = 7003562. Its totient is φ = 7003560.

The previous prime is 7003543. The next prime is 7003573. The reversal of 7003561 is 1653007.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6859161 + 144400 = 2619^2 + 380^2 .

It is an emirp because it is prime and its reverse (1653007) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7003561 - 2¹¹ = 7001513 is a prime.

It is not a weakly prime, because it can be changed into another prime (7003361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3501780 + 3501781.

It is an arithmetic number, because the mean of its divisors is an integer number (3501781).

Almost surely, 2^7003561 is an apocalyptic number.

It is an amenable number.

7003561 is a deficient number, since it is larger than the sum of its proper divisors (1).

7003561 is an equidigital number, since it uses as much as digits as its factorization.

7003561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 7003561 is about 2646.4241912437. The cubic root of 7003561 is about 191.3255506256.

Adding to 7003561 its reverse (1653007), we get a palindrome (8656568).

The spelling of 7003561 in words is "seven million, three thousand, five hundred sixty-one".