108816557 has 4 divisors (see below), whose sum is σ = 108934620. Its totient is φ = 108698496.

The previous prime is 108816551. The next prime is 108816559. The reversal of 108816557 is 755618801.

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

It can be written as a sum of positive squares in 2 ways, for example, as 57851236 + 50965321 = 7606^2 + 7139^2 .

It is a cyclic number.

It is not a de Polignac number, because 108816557 - 2²⁶ = 41707693 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 (108816551) 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, 57638 + ... + 59495.

It is an arithmetic number, because the mean of its divisors is an integer number (27233655).

Almost surely, 2^108816557 is an apocalyptic number.

It is an amenable number.

108816557 is a deficient number, since it is larger than the sum of its proper divisors (118063).

108816557 is an equidigital number, since it uses as much as digits as its factorization.

108816557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118062.

The product of its (nonzero) digits is 67200, while the sum is 41.

The square root of 108816557 is about 10431.5174830894. The cubic root of 108816557 is about 477.4174918431.

The spelling of 108816557 in words is "one hundred eight million, eight hundred sixteen thousand, five hundred fifty-seven".