109047521 has 4 divisors (see below), whose sum is σ = 118960944. Its totient is φ = 99134100.

The previous prime is 109047481. The next prime is 109047529. The reversal of 109047521 is 125740901.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 109047521 - 2⁶ = 109047457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109047529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4956695 + ... + 4956716.

It is an arithmetic number, because the mean of its divisors is an integer number (29740236).

Almost surely, 2^109047521 is an apocalyptic number.

109047521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

109047521 is a deficient number, since it is larger than the sum of its proper divisors (9913423).

109047521 is an equidigital number, since it uses as much as digits as its factorization.

109047521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9913422.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 109047521 is about 10442.5821040584. The cubic root of 109047521 is about 477.7550272784.

The spelling of 109047521 in words is "one hundred nine million, forty-seven thousand, five hundred twenty-one".