7975543 has 2 divisors, whose sum is σ = 7975544. Its totient is φ = 7975542.

The previous prime is 7975531. The next prime is 7975559. The reversal of 7975543 is 3455797.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7975543 is a prime.

It is a super-2 number, since 2×7975543² = 127218572289698, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7975496 and 7975505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7975343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3987771 + 3987772.

It is an arithmetic number, because the mean of its divisors is an integer number (3987772).

Almost surely, 2^7975543 is an apocalyptic number.

7975543 is a deficient number, since it is larger than the sum of its proper divisors (1).

7975543 is an equidigital number, since it uses as much as digits as its factorization.

7975543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 132300, while the sum is 40.

The square root of 7975543 is about 2824.1003877341. The cubic root of 7975543 is about 199.7959836240.

The spelling of 7975543 in words is "seven million, nine hundred seventy-five thousand, five hundred forty-three".