98591521 has 8 divisors (see below), whose sum is σ = 112904064. Its totient is φ = 84336000.

The previous prime is 98591509. The next prime is 98591531. The reversal of 98591521 is 12519589.

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

It is not a de Polignac number, because 98591521 - 2²³ = 90202913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (98591531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is an upside-down number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10480 + ... + 17521.

It is an arithmetic number, because the mean of its divisors is an integer number (14113008).

Almost surely, 2^98591521 is an apocalyptic number.

It is an amenable number.

98591521 is a deficient number, since it is larger than the sum of its proper divisors (14312543).

98591521 is a wasteful number, since it uses less digits than its factorization.

98591521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28511.

The product of its digits is 32400, while the sum is 40.

The square root of 98591521 is about 9929.3263114876. The cubic root of 98591521 is about 461.9693779170.

The spelling of 98591521 in words is "ninety-eight million, five hundred ninety-one thousand, five hundred twenty-one".