581141959 has 4 divisors (see below), whose sum is σ = 581802480. Its totient is φ = 580481440.

The previous prime is 581141929. The next prime is 581141971. The reversal of 581141959 is 959141185.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 581141959 - 2¹³ = 581133767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (581141929) 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, 328939 + ... + 330700.

It is an arithmetic number, because the mean of its divisors is an integer number (145450620).

Almost surely, 2^581141959 is an apocalyptic number.

581141959 is a deficient number, since it is larger than the sum of its proper divisors (660521).

581141959 is an equidigital number, since it uses as much as digits as its factorization.

581141959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660520.

The product of its digits is 64800, while the sum is 43.

The square root of 581141959 is about 24106.8861323896. The cubic root of 581141959 is about 834.5020560141.

The spelling of 581141959 in words is "five hundred eighty-one million, one hundred forty-one thousand, nine hundred fifty-nine".