100289581 has 8 divisors (see below), whose sum is σ = 120649280. Its totient is φ = 81438048.

The previous prime is 100289549. The next prime is 100289597. The reversal of 100289581 is 185982001.

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

It is a cyclic number.

It is not a de Polignac number, because 100289581 - 2⁵ = 100289549 is a prime.

It is a super-2 number, since 2×100289581² = 20116000114311122, 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 (100289081) 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, 376896 + ... + 377161.

It is an arithmetic number, because the mean of its divisors is an integer number (15081160).

Almost surely, 2^100289581 is an apocalyptic number.

It is an amenable number.

100289581 is a deficient number, since it is larger than the sum of its proper divisors (20359699).

100289581 is an equidigital number, since it uses as much as digits as its factorization.

100289581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754083.

The product of its (nonzero) digits is 5760, while the sum is 34.

The square root of 100289581 is about 10014.4685830053. The cubic root of 100289581 is about 464.6064902228.

The spelling of 100289581 in words is "one hundred million, two hundred eighty-nine thousand, five hundred eighty-one".