74555543 has 2 divisors, whose sum is σ = 74555544. Its totient is φ = 74555542.

The previous prime is 74555531. The next prime is 74555587. The reversal of 74555543 is 34555547.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 74555543 - 2⁸ = 74555287 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 74555497 and 74555506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74555843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37277771 + 37277772.

It is an arithmetic number, because the mean of its divisors is an integer number (37277772).

Almost surely, 2^74555543 is an apocalyptic number.

74555543 is a deficient number, since it is larger than the sum of its proper divisors (1).

74555543 is an equidigital number, since it uses as much as digits as its factorization.

74555543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 210000, while the sum is 38.

The square root of 74555543 is about 8634.5551709396. Note that the first 3 decimals coincide. The cubic root of 74555543 is about 420.8816381982.

The spelling of 74555543 in words is "seventy-four million, five hundred fifty-five thousand, five hundred forty-three".