141581 has 8 divisors (see below), whose sum is σ = 157728. Its totient is φ = 126000.

The previous prime is 141551. The next prime is 141587. The reversal of 141581 is 185141.

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 141581 - 2¹⁰ = 140557 is a prime.

It is a super-2 number, since 2×141581² = 40090359122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (141587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 566 + ... + 776.

It is an arithmetic number, because the mean of its divisors is an integer number (19716).

2¹⁴¹⁵⁸¹ is an apocalyptic number.

141581 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

141581 is a deficient number, since it is larger than the sum of its proper divisors (16147).

141581 is a wasteful number, since it uses less digits than its factorization.

141581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283.

The product of its digits is 160, while the sum is 20.

The square root of 141581 is about 376.2725076324. The cubic root of 141581 is about 52.1196701453.

The spelling of 141581 in words is "one hundred forty-one thousand, five hundred eighty-one".