75775445 has 8 divisors (see below), whose sum is σ = 93388344. Its totient is φ = 58981824.

The previous prime is 75775429. The next prime is 75775451. The reversal of 75775445 is 54457757.

It can be written as a sum of positive squares in 4 ways, for example, as 2193361 + 73582084 = 1481^2 + 8578^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 75775445 - 2⁴ = 75775429 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 75775396 and 75775405.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 204614 + ... + 204983.

It is an arithmetic number, because the mean of its divisors is an integer number (11673543).

Almost surely, 2^75775445 is an apocalyptic number.

It is an amenable number.

75775445 is a deficient number, since it is larger than the sum of its proper divisors (17612899).

75775445 is a wasteful number, since it uses less digits than its factorization.

75775445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409639.

The product of its digits is 686000, while the sum is 44.

The square root of 75775445 is about 8704.9092470858. The cubic root of 75775445 is about 423.1647646934.

The spelling of 75775445 in words is "seventy-five million, seven hundred seventy-five thousand, four hundred forty-five".