108557 has 2 divisors, whose sum is σ = 108558. Its totient is φ = 108556.

The previous prime is 108553. The next prime is 108571. The reversal of 108557 is 755801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90601 + 17956 = 301^2 + 134^2 .

It is a cyclic number.

It is not a de Polignac number, because 108557 - 2² = 108553 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54278 + 54279.

It is an arithmetic number, because the mean of its divisors is an integer number (54279).

2¹⁰⁸⁵⁵⁷ is an apocalyptic number.

It is an amenable number.

108557 is a deficient number, since it is larger than the sum of its proper divisors (1).

108557 is an equidigital number, since it uses as much as digits as its factorization.

108557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1400, while the sum is 26.

The square root of 108557 is about 329.4798931650. The cubic root of 108557 is about 47.7037599569.

The spelling of 108557 in words is "one hundred eight thousand, five hundred fifty-seven".