86526551 has 4 divisors (see below), whose sum is σ = 91080600. Its totient is φ = 81972504.

The previous prime is 86526521. The next prime is 86526553. The reversal of 86526551 is 15562568.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86526551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86526553) 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, 2276996 + ... + 2277033.

It is an arithmetic number, because the mean of its divisors is an integer number (22770150).

Almost surely, 2^86526551 is an apocalyptic number.

86526551 is a deficient number, since it is larger than the sum of its proper divisors (4554049).

86526551 is a wasteful number, since it uses less digits than its factorization.

86526551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4554048.

The product of its digits is 72000, while the sum is 38.

The square root of 86526551 is about 9301.9648999553. The cubic root of 86526551 is about 442.2995161472.

The spelling of 86526551 in words is "eighty-six million, five hundred twenty-six thousand, five hundred fifty-one".