73875321 has 20 divisors (see below), whose sum is σ = 118847652. Its totient is φ = 45461088.

The previous prime is 73875313. The next prime is 73875337. The reversal of 73875321 is 12357837.

It can be written as a sum of positive squares in 2 ways, for example, as 11148921 + 62726400 = 3339^2 + 7920^2 .

It is not a de Polignac number, because 73875321 - 2³ = 73875313 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (73875301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 34026 + ... + 36131.

Almost surely, 2^73875321 is an apocalyptic number.

It is an amenable number.

73875321 is a deficient number, since it is larger than the sum of its proper divisors (44972331).

73875321 is a wasteful number, since it uses less digits than its factorization.

73875321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70182 (or 70173 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 73875321 is about 8595.0753923395. The cubic root of 73875321 is about 419.5977270738.

The spelling of 73875321 in words is "seventy-three million, eight hundred seventy-five thousand, three hundred twenty-one".