109057 has 4 divisors (see below), whose sum is σ = 117460. Its totient is φ = 100656.

The previous prime is 109049. The next prime is 109063. The reversal of 109057 is 750901.

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 55696 + 53361 = 236^2 + 231^2 .

It is a cyclic number.

It is not a de Polignac number, because 109057 - 2³ = 109049 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 109057.

It is not an unprimeable number, because it can be changed into a prime (109037) 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, 4182 + ... + 4207.

It is an arithmetic number, because the mean of its divisors is an integer number (29365).

It is a Proth number, since it is equal to 213 ⋅ 2⁹ + 1 and 213 < 2⁹.

2¹⁰⁹⁰⁵⁷ is an apocalyptic number.

It is an amenable number.

109057 is a deficient number, since it is larger than the sum of its proper divisors (8403).

109057 is an equidigital number, since it uses as much as digits as its factorization.

109057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8402.

The product of its (nonzero) digits is 315, while the sum is 22.

The square root of 109057 is about 330.2377931128. The cubic root of 109057 is about 47.7768869894.

Adding to 109057 its reverse (750901), we get a palindrome (859958).

The spelling of 109057 in words is "one hundred nine thousand, fifty-seven".