86525239 has 4 divisors (see below), whose sum is σ = 86833440. Its totient is φ = 86217040.

The previous prime is 86525233. The next prime is 86525273. The reversal of 86525239 is 93252568.

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

It is a cyclic number.

It is not a de Polignac number, because 86525239 - 2⁷ = 86525111 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86525233) 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, 153679 + ... + 154240.

It is an arithmetic number, because the mean of its divisors is an integer number (21708360).

Almost surely, 2^86525239 is an apocalyptic number.

86525239 is a deficient number, since it is larger than the sum of its proper divisors (308201).

86525239 is a wasteful number, since it uses less digits than its factorization.

86525239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308200.

The product of its digits is 129600, while the sum is 40.

The square root of 86525239 is about 9301.8943769535. The cubic root of 86525239 is about 442.2972806103.

The spelling of 86525239 in words is "eighty-six million, five hundred twenty-five thousand, two hundred thirty-nine".