109117545 has 16 divisors (see below), whose sum is σ = 174992832. Its totient is φ = 58061120.

The previous prime is 109117537. The next prime is 109117549. The reversal of 109117545 is 545711901.

It is not a de Polignac number, because 109117545 - 2³ = 109117537 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (109117549) 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, 1566 + ... + 14855.

It is an arithmetic number, because the mean of its divisors is an integer number (10937052).

Almost surely, 2^109117545 is an apocalyptic number.

109117545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

109117545 is a deficient number, since it is larger than the sum of its proper divisors (65875287).

109117545 is a wasteful number, since it uses less digits than its factorization.

109117545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16872.

The product of its (nonzero) digits is 6300, while the sum is 33.

The square root of 109117545 is about 10445.9343765888. The cubic root of 109117545 is about 477.8572675967.

The spelling of 109117545 in words is "one hundred nine million, one hundred seventeen thousand, five hundred forty-five".