75081983 has 4 divisors (see below), whose sum is σ = 76679520. Its totient is φ = 73484448.

The previous prime is 75081949. The next prime is 75081989. The reversal of 75081983 is 38918057.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75081983 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 75081983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75081989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 798698 + ... + 798791.

It is an arithmetic number, because the mean of its divisors is an integer number (19169880).

Almost surely, 2^75081983 is an apocalyptic number.

75081983 is a deficient number, since it is larger than the sum of its proper divisors (1597537).

75081983 is a wasteful number, since it uses less digits than its factorization.

75081983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1597536.

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 75081983 is about 8664.9860357649. The cubic root of 75081983 is about 421.8699370074.

The spelling of 75081983 in words is "seventy-five million, eighty-one thousand, nine hundred eighty-three".