581456056 has 8 divisors (see below), whose sum is σ = 1090230120. Its totient is φ = 290728024.

The previous prime is 581456053. The next prime is 581456059. The reversal of 581456056 is 650654185.

It is an interprime number because it is at equal distance from previous prime (581456053) and next prime (581456059).

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×581456056² = 676182290118150272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (581456053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36340996 + ... + 36341011.

It is an arithmetic number, because the mean of its divisors is an integer number (136278765).

Almost surely, 2^581456056 is an apocalyptic number.

It is an amenable number.

581456056 is a deficient number, since it is larger than the sum of its proper divisors (508774064).

581456056 is a wasteful number, since it uses less digits than its factorization.

581456056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72682013 (or 72682009 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 40.

The square root of 581456056 is about 24113.3999261821. The cubic root of 581456056 is about 834.6523734936.

The spelling of 581456056 in words is "five hundred eighty-one million, four hundred fifty-six thousand, fifty-six".