10133581 has 4 divisors (see below), whose sum is σ = 10729692. Its totient is φ = 9537472.

The previous prime is 10133573. The next prime is 10133587. The reversal of 10133581 is 18533101.

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 8608356 + 1525225 = 2934^2 + 1235^2 .

It is a cyclic number.

It is not a de Polignac number, because 10133581 - 2³ = 10133573 is a prime.

It is a super-2 number, since 2×10133581² = 205378927767122, 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 (10133587) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 298030 + ... + 298063.

It is an arithmetic number, because the mean of its divisors is an integer number (2682423).

Almost surely, 2^10133581 is an apocalyptic number.

It is an amenable number.

10133581 is a deficient number, since it is larger than the sum of its proper divisors (596111).

10133581 is an equidigital number, since it uses as much as digits as its factorization.

10133581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596110.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 10133581 is about 3183.3286038359. The cubic root of 10133581 is about 216.3985340596.

Adding to 10133581 its reverse (18533101), we get a palindrome (28666682).

The spelling of 10133581 in words is "ten million, one hundred thirty-three thousand, five hundred eighty-one".