109268557 has 4 divisors (see below), whose sum is σ = 109483740. Its totient is φ = 109053376.

The previous prime is 109268539. The next prime is 109268569. The reversal of 109268557 is 755862901.

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 54597321 + 54671236 = 7389^2 + 7394^2 .

It is a cyclic number.

It is not a de Polignac number, because 109268557 - 2⁷ = 109268429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109268527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106828 + ... + 107845.

It is an arithmetic number, because the mean of its divisors is an integer number (27370935).

Almost surely, 2^109268557 is an apocalyptic number.

It is an amenable number.

109268557 is a deficient number, since it is larger than the sum of its proper divisors (215183).

109268557 is an equidigital number, since it uses as much as digits as its factorization.

109268557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215182.

The product of its (nonzero) digits is 151200, while the sum is 43.

The square root of 109268557 is about 10453.1601441861. The cubic root of 109268557 is about 478.0776077138.

The spelling of 109268557 in words is "one hundred nine million, two hundred sixty-eight thousand, five hundred fifty-seven".