75840055 has 4 divisors (see below), whose sum is σ = 91008072. Its totient is φ = 60672040.

The previous prime is 75840029. The next prime is 75840067. The reversal of 75840055 is 55004857.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 75840055 - 2¹⁹ = 75315767 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 75840055.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7584001 + ... + 7584010.

It is an arithmetic number, because the mean of its divisors is an integer number (22752018).

Almost surely, 2^75840055 is an apocalyptic number.

75840055 is a deficient number, since it is larger than the sum of its proper divisors (15168017).

75840055 is a wasteful number, since it uses less digits than its factorization.

75840055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15168016.

The product of its (nonzero) digits is 28000, while the sum is 34.

The square root of 75840055 is about 8708.6195806224. The cubic root of 75840055 is about 423.2850011299.

The spelling of 75840055 in words is "seventy-five million, eight hundred forty thousand, fifty-five".