108217257 has 8 divisors (see below), whose sum is σ = 152777376. Its totient is φ = 67900992.

The previous prime is 108217253. The next prime is 108217273. The reversal of 108217257 is 752712801.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 108217257 - 2² = 108217253 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (108217253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1060903 + ... + 1061004.

It is an arithmetic number, because the mean of its divisors is an integer number (19097172).

Almost surely, 2^108217257 is an apocalyptic number.

108217257 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

108217257 is a deficient number, since it is larger than the sum of its proper divisors (44560119).

108217257 is a wasteful number, since it uses less digits than its factorization.

108217257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2121927.

The product of its (nonzero) digits is 7840, while the sum is 33.

The square root of 108217257 is about 10402.7523761743. The cubic root of 108217257 is about 476.5394294742.

The spelling of 108217257 in words is "one hundred eight million, two hundred seventeen thousand, two hundred fifty-seven".