109455557 has 2 divisors, whose sum is σ = 109455558. Its totient is φ = 109455556.

The previous prime is 109455553. The next prime is 109455569. The reversal of 109455557 is 755554901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75186241 + 34269316 = 8671^2 + 5854^2 .

It is a cyclic number.

It is not a de Polignac number, because 109455557 - 2² = 109455553 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109455553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54727778 + 54727779.

It is an arithmetic number, because the mean of its divisors is an integer number (54727779).

Almost surely, 2^109455557 is an apocalyptic number.

It is an amenable number.

109455557 is a deficient number, since it is larger than the sum of its proper divisors (1).

109455557 is an equidigital number, since it uses as much as digits as its factorization.

109455557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 157500, while the sum is 41.

The square root of 109455557 is about 10462.1009840280. The cubic root of 109455557 is about 478.3501764018.

The spelling of 109455557 in words is "one hundred nine million, four hundred fifty-five thousand, five hundred fifty-seven".