74221543 has 8 divisors (see below), whose sum is σ = 85230720. Its totient is φ = 63922680.

The previous prime is 74221517. The next prime is 74221547. The reversal of 74221543 is 34512247.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 74221543 - 2²¹ = 72124391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74221547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177355 + ... + 177772.

It is an arithmetic number, because the mean of its divisors is an integer number (10653840).

Almost surely, 2^74221543 is an apocalyptic number.

74221543 is a deficient number, since it is larger than the sum of its proper divisors (11009177).

74221543 is a wasteful number, since it uses less digits than its factorization.

74221543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355157.

The product of its digits is 6720, while the sum is 28.

The square root of 74221543 is about 8615.1925689447. The cubic root of 74221543 is about 420.2521973612.

The spelling of 74221543 in words is "seventy-four million, two hundred twenty-one thousand, five hundred forty-three".