109516521 has 12 divisors (see below), whose sum is σ = 150888336. Its totient is φ = 70653960.

The previous prime is 109516489. The next prime is 109516523. The reversal of 109516521 is 125615901.

It is not a de Polignac number, because 109516521 - 2⁵ = 109516489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (109516523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16111 + ... + 21876.

It is an arithmetic number, because the mean of its divisors is an integer number (12574028).

Almost surely, 2^109516521 is an apocalyptic number.

It is an amenable number.

109516521 is a deficient number, since it is larger than the sum of its proper divisors (41371815).

109516521 is an equidigital number, since it uses as much as digits as its factorization.

109516521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38052 (or 38021 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 30.

The square root of 109516521 is about 10465.0141423698. The cubic root of 109516521 is about 478.4389696022.

The spelling of 109516521 in words is "one hundred nine million, five hundred sixteen thousand, five hundred twenty-one".