109557605 has 16 divisors (see below), whose sum is σ = 139494960. Its totient is φ = 82317312.

The previous prime is 109557599. The next prime is 109557607. The reversal of 109557605 is 506755901.

It can be written as a sum of positive squares in 8 ways, for example, as 20449 + 109537156 = 143^2 + 10466^2 .

It is a cyclic number.

It is not a de Polignac number, because 109557605 - 2⁶ = 109557541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109557607) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51401 + ... + 53489.

It is an arithmetic number, because the mean of its divisors is an integer number (8718435).

Almost surely, 2^109557605 is an apocalyptic number.

It is an amenable number.

109557605 is a deficient number, since it is larger than the sum of its proper divisors (29937355).

109557605 is a wasteful number, since it uses less digits than its factorization.

109557605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2728.

The product of its (nonzero) digits is 47250, while the sum is 38.

The square root of 109557605 is about 10466.9768796917. The cubic root of 109557605 is about 478.4987892806.

The spelling of 109557605 in words is "one hundred nine million, five hundred fifty-seven thousand, six hundred five".