74445543 has 6 divisors (see below), whose sum is σ = 107532464. Its totient is φ = 49630356.

The previous prime is 74445493. The next prime is 74445557. The reversal of 74445543 is 34554447.

74445543 is a `hidden beast` number, since 74 + 4 + 45 + 543 = 666.

It is not a de Polignac number, because 74445543 - 2⁶ = 74445479 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74445498 and 74445507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74445593) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4135855 + ... + 4135872.

Almost surely, 2^74445543 is an apocalyptic number.

74445543 is a deficient number, since it is larger than the sum of its proper divisors (33086921).

74445543 is a wasteful number, since it uses less digits than its factorization.

74445543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8271733 (or 8271730 counting only the distinct ones).

The product of its digits is 134400, while the sum is 36.

The square root of 74445543 is about 8628.1830648173. The cubic root of 74445543 is about 420.6745453113.

The spelling of 74445543 in words is "seventy-four million, four hundred forty-five thousand, five hundred forty-three".