7043561 has 16 divisors (see below), whose sum is σ = 8355840. Its totient is φ = 5812560.

The previous prime is 7043557. The next prime is 7043563. The reversal of 7043561 is 1653407.

It is a cyclic number.

It is not a de Polignac number, because 7043561 - 2² = 7043557 is a prime.

It is a super-2 number, since 2×7043561² = 99223503121442, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7043561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7043563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25856 + ... + 26126.

It is an arithmetic number, because the mean of its divisors is an integer number (522240).

Almost surely, 2^7043561 is an apocalyptic number.

It is an amenable number.

7043561 is a deficient number, since it is larger than the sum of its proper divisors (1312279).

7043561 is a wasteful number, since it uses less digits than its factorization.

7043561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 7043561 is about 2653.9707986336. The cubic root of 7043561 is about 191.6891036956.

Adding to 7043561 its reverse (1653407), we get a palindrome (8696968).

The spelling of 7043561 in words is "seven million, forty-three thousand, five hundred sixty-one".