73975543 has 4 divisors (see below), whose sum is σ = 75974920. Its totient is φ = 71976168.

The previous prime is 73975541. The next prime is 73975589. The reversal of 73975543 is 34557937.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 73975543 - 2¹ = 73975541 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 73975543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73975541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 999633 + ... + 999706.

It is an arithmetic number, because the mean of its divisors is an integer number (18993730).

Almost surely, 2^73975543 is an apocalyptic number.

73975543 is a deficient number, since it is larger than the sum of its proper divisors (1999377).

73975543 is a wasteful number, since it uses less digits than its factorization.

73975543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1999376.

The product of its digits is 396900, while the sum is 43.

The square root of 73975543 is about 8600.9036153186. The cubic root of 73975543 is about 419.7873886112.

The spelling of 73975543 in words is "seventy-three million, nine hundred seventy-five thousand, five hundred forty-three".