86817553 has 4 divisors (see below), whose sum is σ = 87629040. Its totient is φ = 86006068.

The previous prime is 86817547. The next prime is 86817557. The reversal of 86817553 is 35571868.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 86817553 - 2⁹ = 86817041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86817557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 405583 + ... + 405796.

It is an arithmetic number, because the mean of its divisors is an integer number (21907260).

Almost surely, 2^86817553 is an apocalyptic number.

It is an amenable number.

86817553 is a deficient number, since it is larger than the sum of its proper divisors (811487).

86817553 is a wasteful number, since it uses less digits than its factorization.

86817553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811486.

The product of its digits is 201600, while the sum is 43.

The square root of 86817553 is about 9317.5937344359. The cubic root of 86817553 is about 442.7948015858.

The spelling of 86817553 in words is "eighty-six million, eight hundred seventeen thousand, five hundred fifty-three".