100098581 has 12 divisors (see below), whose sum is σ = 111362496. Its totient is φ = 89893320.

The previous prime is 100098577. The next prime is 100098587. The reversal of 100098581 is 185890001.

It is a happy number.

It is not a de Polignac number, because 100098581 - 2² = 100098577 is a prime.

It is a super-2 number, since 2×100098581² = 20039451836427122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100098587) 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, 5060 + ... + 15026.

It is an arithmetic number, because the mean of its divisors is an integer number (9280208).

Almost surely, 2^100098581 is an apocalyptic number.

100098581 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

100098581 is a deficient number, since it is larger than the sum of its proper divisors (11263915).

100098581 is an equidigital number, since it uses as much as digits as its factorization.

100098581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10072 (or 10061 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 32.

The square root of 100098581 is about 10004.9278358217. The cubic root of 100098581 is about 464.3113574250.

The spelling of 100098581 in words is "one hundred million, ninety-eight thousand, five hundred eighty-one".