98855221 has 4 divisors (see below), whose sum is σ = 104670252. Its totient is φ = 93040192.

The previous prime is 98855209. The next prime is 98855257. The reversal of 98855221 is 12255889.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 53144100 + 45711121 = 7290^2 + 6761^2 .

It is a cyclic number.

It is not a de Polignac number, because 98855221 - 2¹³ = 98847029 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98855201) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2907490 + ... + 2907523.

It is an arithmetic number, because the mean of its divisors is an integer number (26167563).

Almost surely, 2^98855221 is an apocalyptic number.

It is an amenable number.

98855221 is a deficient number, since it is larger than the sum of its proper divisors (5815031).

98855221 is a wasteful number, since it uses less digits than its factorization.

98855221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5815030.

The product of its digits is 57600, while the sum is 40.

The square root of 98855221 is about 9942.5962907080. The cubic root of 98855221 is about 462.3808834708.

The spelling of 98855221 in words is "ninety-eight million, eight hundred fifty-five thousand, two hundred twenty-one".