75304345 has 4 divisors (see below), whose sum is σ = 90365220. Its totient is φ = 60243472.

The previous prime is 75304343. The next prime is 75304349. The reversal of 75304345 is 54340357.

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 50424201 + 24880144 = 7101^2 + 4988^2 .

It is a cyclic number.

It is not a de Polignac number, because 75304345 - 2¹ = 75304343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (75304343) 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, 7530430 + ... + 7530439.

It is an arithmetic number, because the mean of its divisors is an integer number (22591305).

Almost surely, 2^75304345 is an apocalyptic number.

It is an amenable number.

75304345 is a deficient number, since it is larger than the sum of its proper divisors (15060875).

75304345 is a wasteful number, since it uses less digits than its factorization.

75304345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15060874.

The product of its (nonzero) digits is 25200, while the sum is 31.

The square root of 75304345 is about 8677.8076148299. The cubic root of 75304345 is about 422.2859950481.

The spelling of 75304345 in words is "seventy-five million, three hundred four thousand, three hundred forty-five".