75520843 has 4 divisors (see below), whose sum is σ = 78125040. Its totient is φ = 72916648.

The previous prime is 75520793. The next prime is 75520853. The reversal of 75520843 is 34802557.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34802557 = 277 ⋅125641.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75520843 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 75520799 and 75520808.

It is not an unprimeable number, because it can be changed into a prime (75520853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1302055 + ... + 1302112.

It is an arithmetic number, because the mean of its divisors is an integer number (19531260).

Almost surely, 2^75520843 is an apocalyptic number.

75520843 is a deficient number, since it is larger than the sum of its proper divisors (2604197).

75520843 is a wasteful number, since it uses less digits than its factorization.

75520843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2604196.

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 75520843 is about 8690.2728956000. The cubic root of 75520843 is about 422.6902948668.

The spelling of 75520843 in words is "seventy-five million, five hundred twenty thousand, eight hundred forty-three".