84527381 has 8 divisors (see below), whose sum is σ = 85318200. Its totient is φ = 83740608.

The previous prime is 84527347. The next prime is 84527419. The reversal of 84527381 is 18372548.

It can be written as a sum of positive squares in 4 ways, for example, as 16200625 + 68326756 = 4025^2 + 8266^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 84527381 - 2²⁶ = 17418517 is a prime.

It is a super-2 number, since 2×84527381² = 14289756277438322, 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 (84527341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53795 + ... + 55343.

It is an arithmetic number, because the mean of its divisors is an integer number (10664775).

Almost surely, 2^84527381 is an apocalyptic number.

It is an amenable number.

84527381 is a deficient number, since it is larger than the sum of its proper divisors (790819).

84527381 is a wasteful number, since it uses less digits than its factorization.

84527381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2023.

The product of its digits is 53760, while the sum is 38.

The square root of 84527381 is about 9193.8773648554. The cubic root of 84527381 is about 438.8665403090.

The spelling of 84527381 in words is "eighty-four million, five hundred twenty-seven thousand, three hundred eighty-one".