109814545 has 4 divisors (see below), whose sum is σ = 131777460. Its totient is φ = 87851632.

The previous prime is 109814539. The next prime is 109814591. The reversal of 109814545 is 545418901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 545418901 = 809 ⋅674189.

It can be written as a sum of positive squares in 2 ways, for example, as 75134224 + 34680321 = 8668^2 + 5889^2 .

It is a cyclic number.

It is not a de Polignac number, because 109814545 - 2¹³ = 109806353 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10981450 + ... + 10981459.

It is an arithmetic number, because the mean of its divisors is an integer number (32944365).

Almost surely, 2^109814545 is an apocalyptic number.

It is an amenable number.

109814545 is a deficient number, since it is larger than the sum of its proper divisors (21962915).

109814545 is an equidigital number, since it uses as much as digits as its factorization.

109814545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21962914.

The product of its (nonzero) digits is 28800, while the sum is 37.

The square root of 109814545 is about 10479.2435318586. The cubic root of 109814545 is about 478.8725637022.

The spelling of 109814545 in words is "one hundred nine million, eight hundred fourteen thousand, five hundred forty-five".