75481493 has 4 divisors (see below), whose sum is σ = 75544140. Its totient is φ = 75418848.

The previous prime is 75481459. The next prime is 75481499. The reversal of 75481493 is 39418457.

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

It can be written as a sum of positive squares in 2 ways, for example, as 55249489 + 20232004 = 7433^2 + 4498^2 .

It is a cyclic number.

It is not a de Polignac number, because 75481493 - 2¹² = 75477397 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 75481493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75481499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29480 + ... + 31937.

It is an arithmetic number, because the mean of its divisors is an integer number (18886035).

Almost surely, 2^75481493 is an apocalyptic number.

It is an amenable number.

75481493 is a deficient number, since it is larger than the sum of its proper divisors (62647).

75481493 is a wasteful number, since it uses less digits than its factorization.

75481493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62646.

The product of its digits is 120960, while the sum is 41.

The square root of 75481493 is about 8688.0085750418. The cubic root of 75481493 is about 422.6168681054.

The spelling of 75481493 in words is "seventy-five million, four hundred eighty-one thousand, four hundred ninety-three".