581955422 has 4 divisors (see below), whose sum is σ = 872933136. Its totient is φ = 290977710.

The previous prime is 581955403. The next prime is 581955431. The reversal of 581955422 is 224559185.

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

It is a super-2 number, since 2×581955422² = 677344226390396168, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 581955422.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145488854 + ... + 145488857.

It is an arithmetic number, because the mean of its divisors is an integer number (218233284).

Almost surely, 2^581955422 is an apocalyptic number.

581955422 is a deficient number, since it is larger than the sum of its proper divisors (290977714).

581955422 is a wasteful number, since it uses less digits than its factorization.

581955422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290977713.

The product of its digits is 144000, while the sum is 41.

The square root of 581955422 is about 24123.7522371624. The cubic root of 581955422 is about 834.8912437986.

The spelling of 581955422 in words is "five hundred eighty-one million, nine hundred fifty-five thousand, four hundred twenty-two".