75009973 has 4 divisors (see below), whose sum is σ = 75752748. Its totient is φ = 74267200.

The previous prime is 75009959. The next prime is 75009997. The reversal of 75009973 is 37990057.

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

It can be written as a sum of positive squares in 2 ways, for example, as 53831569 + 21178404 = 7337^2 + 4602^2 .

It is a cyclic number.

It is not a de Polignac number, because 75009973 - 2⁵ = 75009941 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 (75009943) 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, 371236 + ... + 371437.

It is an arithmetic number, because the mean of its divisors is an integer number (18938187).

Almost surely, 2^75009973 is an apocalyptic number.

It is an amenable number.

75009973 is a deficient number, since it is larger than the sum of its proper divisors (742775).

75009973 is a wasteful number, since it uses less digits than its factorization.

75009973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742774.

The product of its (nonzero) digits is 59535, while the sum is 40.

The square root of 75009973 is about 8660.8298101279. The cubic root of 75009973 is about 421.7350241646.

The spelling of 75009973 in words is "seventy-five million, nine thousand, nine hundred seventy-three".