75889381 has 4 divisors (see below), whose sum is σ = 76035564. Its totient is φ = 75743200.

The previous prime is 75889357. The next prime is 75889393. The reversal of 75889381 is 18398857.

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 20520900 + 55368481 = 4530^2 + 7441^2 .

It is a cyclic number.

It is not a de Polignac number, because 75889381 - 2²⁵ = 42334949 is a prime.

It is a super-2 number, since 2×75889381² = 11518396297126322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75889181) 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, 72310 + ... + 73351.

It is an arithmetic number, because the mean of its divisors is an integer number (19008891).

Almost surely, 2^75889381 is an apocalyptic number.

It is an amenable number.

75889381 is a deficient number, since it is larger than the sum of its proper divisors (146183).

75889381 is a wasteful number, since it uses less digits than its factorization.

75889381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146182.

The product of its digits is 483840, while the sum is 49.

The square root of 75889381 is about 8711.4511420314. The cubic root of 75889381 is about 423.3767487386.

The spelling of 75889381 in words is "seventy-five million, eight hundred eighty-nine thousand, three hundred eighty-one".