75812245 has 4 divisors (see below), whose sum is σ = 90974700. Its totient is φ = 60649792.

The previous prime is 75812237. The next prime is 75812249. The reversal of 75812245 is 54221857.

It is a happy number.

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 21613201 + 54199044 = 4649^2 + 7362^2 .

It is a cyclic number.

It is not a de Polignac number, because 75812245 - 2³ = 75812237 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 75812245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75812249) 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, 7581220 + ... + 7581229.

It is an arithmetic number, because the mean of its divisors is an integer number (22743675).

Almost surely, 2^75812245 is an apocalyptic number.

It is an amenable number.

75812245 is a deficient number, since it is larger than the sum of its proper divisors (15162455).

75812245 is a wasteful number, since it uses less digits than its factorization.

75812245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15162454.

The product of its digits is 22400, while the sum is 34.

The square root of 75812245 is about 8707.0227402942. The cubic root of 75812245 is about 423.2332562877.

The spelling of 75812245 in words is "seventy-five million, eight hundred twelve thousand, two hundred forty-five".