109106557 has 4 divisors (see below), whose sum is σ = 124693216. Its totient is φ = 93519900.

The previous prime is 109106519. The next prime is 109106573. The reversal of 109106557 is 755601901.

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 109106557 - 2¹¹ = 109104509 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 (109106507) 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, 7793319 + ... + 7793332.

It is an arithmetic number, because the mean of its divisors is an integer number (31173304).

Almost surely, 2^109106557 is an apocalyptic number.

It is an amenable number.

109106557 is a deficient number, since it is larger than the sum of its proper divisors (15586659).

109106557 is an equidigital number, since it uses as much as digits as its factorization.

109106557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15586658.

The product of its (nonzero) digits is 9450, while the sum is 34.

The square root of 109106557 is about 10445.4084170989. The cubic root of 109106557 is about 477.8412271823.

The spelling of 109106557 in words is "one hundred nine million, one hundred six thousand, five hundred fifty-seven".