75311493 has 8 divisors (see below), whose sum is σ = 103654656. Its totient is φ = 48588000.

The previous prime is 75311471. The next prime is 75311501. The reversal of 75311493 is 39411357.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 75311493 - 2⁸ = 75311237 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75311443) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 404808 + ... + 404993.

It is an arithmetic number, because the mean of its divisors is an integer number (12956832).

Almost surely, 2^75311493 is an apocalyptic number.

It is an amenable number.

75311493 is a deficient number, since it is larger than the sum of its proper divisors (28343163).

75311493 is a wasteful number, since it uses less digits than its factorization.

75311493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809835.

The product of its digits is 11340, while the sum is 33.

The square root of 75311493 is about 8678.2194602349. The cubic root of 75311493 is about 422.2993559628.

It can be divided in two parts, 753 and 11493, that added together give a triangular number (12246 = T₁₅₆).

The spelling of 75311493 in words is "seventy-five million, three hundred eleven thousand, four hundred ninety-three".