73424521 has 8 divisors (see below), whose sum is σ = 75319200. Its totient is φ = 71538432.

The previous prime is 73424509. The next prime is 73424543. The reversal of 73424521 is 12542437.

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 73424521 - 2⁵ = 73424489 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 73424521.

It is not an unprimeable number, because it can be changed into a prime (73424501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17406 + ... + 21208.

It is an arithmetic number, because the mean of its divisors is an integer number (9414900).

Almost surely, 2^73424521 is an apocalyptic number.

It is an amenable number.

73424521 is a deficient number, since it is larger than the sum of its proper divisors (1894679).

73424521 is a wasteful number, since it uses less digits than its factorization.

73424521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4295.

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

The square root of 73424521 is about 8568.8109443493. The cubic root of 73424521 is about 418.7424991305.

Adding to 73424521 its reverse (12542437), we get a palindrome (85966958).

The spelling of 73424521 in words is "seventy-three million, four hundred twenty-four thousand, five hundred twenty-one".