75540161 has 8 divisors (see below), whose sum is σ = 76920360. Its totient is φ = 74172672.

The previous prime is 75540151. The next prime is 75540167. The reversal of 75540161 is 16104557.

It can be written as a sum of positive squares in 4 ways, for example, as 15555136 + 59985025 = 3944^2 + 7745^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75540161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75540167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9251 + ... + 15383.

It is an arithmetic number, because the mean of its divisors is an integer number (9615045).

Almost surely, 2^75540161 is an apocalyptic number.

It is an amenable number.

75540161 is a deficient number, since it is larger than the sum of its proper divisors (1380199).

75540161 is a wasteful number, since it uses less digits than its factorization.

75540161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6355.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 75540161 is about 8691.3842971071. The cubic root of 75540161 is about 422.7263327545.

The spelling of 75540161 in words is "seventy-five million, five hundred forty thousand, one hundred sixty-one".