75434545 has 4 divisors (see below), whose sum is σ = 90521460. Its totient is φ = 60347632.

The previous prime is 75434533. The next prime is 75434573. The reversal of 75434545 is 54543457.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54543457 = 6343 ⋅8599.

It can be written as a sum of positive squares in 2 ways, for example, as 46457856 + 28976689 = 6816^2 + 5383^2 .

It is a cyclic number.

It is not a de Polignac number, because 75434545 - 2⁹ = 75434033 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7543450 + ... + 7543459.

It is an arithmetic number, because the mean of its divisors is an integer number (22630365).

Almost surely, 2^75434545 is an apocalyptic number.

It is an amenable number.

75434545 is a deficient number, since it is larger than the sum of its proper divisors (15086915).

75434545 is a wasteful number, since it uses less digits than its factorization.

75434545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15086914.

The product of its digits is 168000, while the sum is 37.

The square root of 75434545 is about 8685.3062697869. The cubic root of 75434545 is about 422.5292301474.

The spelling of 75434545 in words is "seventy-five million, four hundred thirty-four thousand, five hundred forty-five".