75304945 has 16 divisors (see below), whose sum is σ = 92272320. Its totient is φ = 58981824.

The previous prime is 75304937. The next prime is 75304949. The reversal of 75304945 is 54940357.

It is a cyclic number.

It is not a de Polignac number, because 75304945 - 2³ = 75304937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (75304949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116794 + ... + 117436.

It is an arithmetic number, because the mean of its divisors is an integer number (5767020).

Almost surely, 2^75304945 is an apocalyptic number.

It is an amenable number.

75304945 is a deficient number, since it is larger than the sum of its proper divisors (16967375).

75304945 is a wasteful number, since it uses less digits than its factorization.

75304945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1104.

The product of its (nonzero) digits is 75600, while the sum is 37.

The square root of 75304945 is about 8677.8421857049. The cubic root of 75304945 is about 422.2871165900.

The spelling of 75304945 in words is "seventy-five million, three hundred four thousand, nine hundred forty-five".