581442413 has 4 divisors (see below), whose sum is σ = 583938108. Its totient is φ = 578946720.

The previous prime is 581442403. The next prime is 581442451. The reversal of 581442413 is 314244185.

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 65334889 + 516107524 = 8083^2 + 22718^2 .

It is a cyclic number.

It is not a de Polignac number, because 581442413 - 2⁶ = 581442349 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 581442413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (581442403) 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, 1247498 + ... + 1247963.

It is an arithmetic number, because the mean of its divisors is an integer number (145984527).

Almost surely, 2^581442413 is an apocalyptic number.

It is an amenable number.

581442413 is a deficient number, since it is larger than the sum of its proper divisors (2495695).

581442413 is a wasteful number, since it uses less digits than its factorization.

581442413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2495694.

The product of its digits is 15360, while the sum is 32.

The square root of 581442413 is about 24113.1170320222. The cubic root of 581442413 is about 834.6458454845.

Adding to 581442413 its reverse (314244185), we get a palindrome (895686598).

The spelling of 581442413 in words is "five hundred eighty-one million, four hundred forty-two thousand, four hundred thirteen".