74534543 has 2 divisors, whose sum is σ = 74534544. Its totient is φ = 74534542.

The previous prime is 74534501. The next prime is 74534557. The reversal of 74534543 is 34543547.

It is a strong prime.

It is an emirp because it is prime and its reverse (34543547) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74534543 - 2⁶ = 74534479 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74534143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37267271 + 37267272.

It is an arithmetic number, because the mean of its divisors is an integer number (37267272).

Almost surely, 2^74534543 is an apocalyptic number.

74534543 is a deficient number, since it is larger than the sum of its proper divisors (1).

74534543 is an equidigital number, since it uses as much as digits as its factorization.

74534543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 100800, while the sum is 35.

The square root of 74534543 is about 8633.3390411822. The cubic root of 74534543 is about 420.8421180229.

The spelling of 74534543 in words is "seventy-four million, five hundred thirty-four thousand, five hundred forty-three".