109557555 has 32 divisors (see below), whose sum is σ = 180897024. Its totient is φ = 56578176.

The previous prime is 109557551. The next prime is 109557557. The reversal of 109557555 is 555755901.

It is not a de Polignac number, because 109557555 - 2² = 109557551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (109557551) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 170064 + ... + 170706.

It is an arithmetic number, because the mean of its divisors is an integer number (5653032).

Almost surely, 2^109557555 is an apocalyptic number.

109557555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

109557555 is a deficient number, since it is larger than the sum of its proper divisors (71339469).

109557555 is a wasteful number, since it uses less digits than its factorization.

109557555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995.

The product of its (nonzero) digits is 196875, while the sum is 42.

The square root of 109557555 is about 10466.9744912272. The cubic root of 109557555 is about 478.4987164880.

The spelling of 109557555 in words is "one hundred nine million, five hundred fifty-seven thousand, five hundred fifty-five".