7140561 has 16 divisors (see below), whose sum is σ = 10612800. Its totient is φ = 4243968.

The previous prime is 7140547. The next prime is 7140563. The reversal of 7140561 is 1650417.

It is not a de Polignac number, because 7140561 - 2⁷ = 7140433 is a prime.

It is a super-2 number, since 2×7140561² = 101975222789442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7140563) 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 in 15 ways as a sum of consecutive naturals, for example, 2716 + ... + 4653.

It is an arithmetic number, because the mean of its divisors is an integer number (663300).

Almost surely, 2^7140561 is an apocalyptic number.

It is an amenable number.

7140561 is a deficient number, since it is larger than the sum of its proper divisors (3472239).

7140561 is a wasteful number, since it uses less digits than its factorization.

7140561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7408.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 7140561 is about 2672.1828156023. The cubic root of 7140561 is about 192.5650401464.

Adding to 7140561 its reverse (1650417), we get a palindrome (8790978).

The spelling of 7140561 in words is "seven million, one hundred forty thousand, five hundred sixty-one".