109996521 has 8 divisors (see below), whose sum is σ = 147208320. Its totient is φ = 73057872.

The previous prime is 109996517. The next prime is 109996531. The reversal of 109996521 is 125699901.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 109996521 - 2² = 109996517 is a prime.

It is not an unprimeable number, because it can be changed into a prime (109996501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67345 + ... + 68958.

It is an arithmetic number, because the mean of its divisors is an integer number (18401040).

Almost surely, 2^109996521 is an apocalyptic number.

It is an amenable number.

109996521 is a deficient number, since it is larger than the sum of its proper divisors (37211799).

109996521 is a wasteful number, since it uses less digits than its factorization.

109996521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136575.

The product of its (nonzero) digits is 43740, while the sum is 42.

The square root of 109996521 is about 10487.9226255727. The cubic root of 109996521 is about 479.1369343349.

The spelling of 109996521 in words is "one hundred nine million, nine hundred ninety-six thousand, five hundred twenty-one".