75349243 has 4 divisors (see below), whose sum is σ = 75460248. Its totient is φ = 75238240.

The previous prime is 75349229. The next prime is 75349249. The reversal of 75349243 is 34294357.

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-75349243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75349249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54478 + ... + 55843.

It is an arithmetic number, because the mean of its divisors is an integer number (18865062).

Almost surely, 2^75349243 is an apocalyptic number.

75349243 is a deficient number, since it is larger than the sum of its proper divisors (111005).

75349243 is a wasteful number, since it uses less digits than its factorization.

75349243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111004.

The product of its digits is 90720, while the sum is 37.

The square root of 75349243 is about 8680.3941730776. The cubic root of 75349243 is about 422.3699035742.

The spelling of 75349243 in words is "seventy-five million, three hundred forty-nine thousand, two hundred forty-three".