8523381 has 8 divisors (see below), whose sum is σ = 11962720. Its totient is φ = 5383152.

The previous prime is 8523349. The next prime is 8523391. The reversal of 8523381 is 1833258.

It is a happy number.

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

It is not a de Polignac number, because 8523381 - 2⁵ = 8523349 is a prime.

It is a super-2 number, since 2×8523381² = 145296047342322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8523311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74710 + ... + 74823.

It is an arithmetic number, because the mean of its divisors is an integer number (1495340).

Almost surely, 2^8523381 is an apocalyptic number.

It is an amenable number.

8523381 is a deficient number, since it is larger than the sum of its proper divisors (3439339).

8523381 is a wasteful number, since it uses less digits than its factorization.

8523381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149555.

The product of its digits is 5760, while the sum is 30.

The square root of 8523381 is about 2919.4830021769. The cubic root of 8523381 is about 204.2697076616.

The spelling of 8523381 in words is "eight million, five hundred twenty-three thousand, three hundred eighty-one".