108947257 has 4 divisors (see below), whose sum is σ = 109171456. Its totient is φ = 108723060.

The previous prime is 108947249. The next prime is 108947327. The reversal of 108947257 is 752749801.

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 108947257 - 2³ = 108947249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108947357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111369 + ... + 112342.

It is an arithmetic number, because the mean of its divisors is an integer number (27292864).

Almost surely, 2^108947257 is an apocalyptic number.

It is an amenable number.

108947257 is a deficient number, since it is larger than the sum of its proper divisors (224199).

108947257 is an equidigital number, since it uses as much as digits as its factorization.

108947257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224198.

The product of its (nonzero) digits is 141120, while the sum is 43.

The square root of 108947257 is about 10437.7802716861. The cubic root of 108947257 is about 477.6085580504.

The spelling of 108947257 in words is "one hundred eight million, nine hundred forty-seven thousand, two hundred fifty-seven".