10099581 has 8 divisors (see below), whose sum is σ = 14258304. Its totient is φ = 6336960.

The previous prime is 10099577. The next prime is 10099589. The reversal of 10099581 is 18599001.

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

It is not a de Polignac number, because 10099581 - 2² = 10099577 is a prime.

It is a super-2 number, since 2×10099581² = 204003072751122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10099589) 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, 98965 + ... + 99066.

It is an arithmetic number, because the mean of its divisors is an integer number (1782288).

Almost surely, 2^10099581 is an apocalyptic number.

It is an amenable number.

10099581 is a deficient number, since it is larger than the sum of its proper divisors (4158723).

10099581 is a wasteful number, since it uses less digits than its factorization.

10099581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198051.

The product of its (nonzero) digits is 3240, while the sum is 33.

The square root of 10099581 is about 3177.9837947982. The cubic root of 10099581 is about 216.1562441205.

It can be divided in two parts, 100 and 99581, that added together give a triangular number (99681 = T₄₄₆).

The spelling of 10099581 in words is "ten million, ninety-nine thousand, five hundred eighty-one".