108782257 has 4 divisors (see below), whose sum is σ = 111722356. Its totient is φ = 105842160.

The previous prime is 108782251. The next prime is 108782279. The reversal of 108782257 is 752287801.

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 44076321 + 64705936 = 6639^2 + 8044^2 .

It is a cyclic number.

It is not a de Polignac number, because 108782257 - 2¹⁹ = 108257969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108782251) 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, 1469994 + ... + 1470067.

It is an arithmetic number, because the mean of its divisors is an integer number (27930589).

Almost surely, 2^108782257 is an apocalyptic number.

It is an amenable number.

108782257 is a deficient number, since it is larger than the sum of its proper divisors (2940099).

108782257 is an equidigital number, since it uses as much as digits as its factorization.

108782257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2940098.

The product of its (nonzero) digits is 62720, while the sum is 40.

The square root of 108782257 is about 10429.8732974087. The cubic root of 108782257 is about 477.3673244137.

The spelling of 108782257 in words is "one hundred eight million, seven hundred eighty-two thousand, two hundred fifty-seven".