75575018 has 8 divisors (see below), whose sum is σ = 113772612. Its totient is φ = 37650816.

The previous prime is 75575011. The next prime is 75575021. The reversal of 75575018 is 81057557.

It can be written as a sum of positive squares in 2 ways, for example, as 73393489 + 2181529 = 8567^2 + 1477^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (75575011) 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, 67655 + ... + 68762.

Almost surely, 2^75575018 is an apocalyptic number.

75575018 is a deficient number, since it is larger than the sum of its proper divisors (38197594).

75575018 is a wasteful number, since it uses less digits than its factorization.

75575018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136696.

The product of its (nonzero) digits is 49000, while the sum is 38.

The square root of 75575018 is about 8693.3893275293. The cubic root of 75575018 is about 422.7913432326.

The spelling of 75575018 in words is "seventy-five million, five hundred seventy-five thousand, eighteen".