75135601 has 4 divisors (see below), whose sum is σ = 75162100. Its totient is φ = 75109104.

The previous prime is 75135589. The next prime is 75135611. The reversal of 75135601 is 10653157.

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 26471025 + 48664576 = 5145^2 + 6976^2 .

It is a cyclic number.

It is not a de Polignac number, because 75135601 - 2⁵ = 75135569 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 75135601.

It is not an unprimeable number, because it can be changed into a prime (75135611) 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, 8406 + ... + 14863.

It is an arithmetic number, because the mean of its divisors is an integer number (18790525).

Almost surely, 2^75135601 is an apocalyptic number.

It is an amenable number.

75135601 is a deficient number, since it is larger than the sum of its proper divisors (26499).

75135601 is a wasteful number, since it uses less digits than its factorization.

75135601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26498.

The product of its (nonzero) digits is 3150, while the sum is 28.

The square root of 75135601 is about 8668.0794297237. The cubic root of 75135601 is about 421.9703358827.

Adding to 75135601 its reverse (10653157), we get a palindrome (85788758).

The spelling of 75135601 in words is "seventy-five million, one hundred thirty-five thousand, six hundred one".