75490243 has 4 divisors (see below), whose sum is σ = 76399848. Its totient is φ = 74580640.

The previous prime is 75490237. The next prime is 75490271. The reversal of 75490243 is 34209457.

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-75490243 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 75490199 and 75490208.

It is not an unprimeable number, because it can be changed into a prime (75490273) 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, 454678 + ... + 454843.

It is an arithmetic number, because the mean of its divisors is an integer number (19099962).

Almost surely, 2^75490243 is an apocalyptic number.

75490243 is a deficient number, since it is larger than the sum of its proper divisors (909605).

75490243 is an equidigital number, since it uses as much as digits as its factorization.

75490243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909604.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 75490243 is about 8688.5121280919. The cubic root of 75490243 is about 422.6331977360.

The spelling of 75490243 in words is "seventy-five million, four hundred ninety thousand, two hundred forty-three".