75030245 has 8 divisors (see below), whose sum is σ = 91735416. Its totient is φ = 58891456.

The previous prime is 75030217. The next prime is 75030253. The reversal of 75030245 is 54203057.

It is a Cunningham number, because it is equal to 8662²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 27019204 + 48011041 = 5198^2 + 6929^2 .

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 75030245 - 2⁶ = 75030181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141302 + ... + 141831.

It is an arithmetic number, because the mean of its divisors is an integer number (11466927).

Almost surely, 2^75030245 is an apocalyptic number.

It is an amenable number.

75030245 is a deficient number, since it is larger than the sum of its proper divisors (16705171).

75030245 is a wasteful number, since it uses less digits than its factorization.

75030245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283191.

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 75030245 is about 8662.0000577234. Note that the first 4 decimals coincide. The cubic root of 75030245 is about 421.7730130790.

The spelling of 75030245 in words is "seventy-five million, thirty thousand, two hundred forty-five".