581100055 has 4 divisors (see below), whose sum is σ = 697320072. Its totient is φ = 464880040.

The previous prime is 581100049. The next prime is 581100061. The reversal of 581100055 is 550001185.

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

It is an interprime number because it is at equal distance from previous prime (581100049) and next prime (581100061).

It is not a de Polignac number, because 581100055 - 2⁹ = 581099543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58110001 + ... + 58110010.

It is an arithmetic number, because the mean of its divisors is an integer number (174330018).

Almost surely, 2^581100055 is an apocalyptic number.

581100055 is a deficient number, since it is larger than the sum of its proper divisors (116220017).

581100055 is a wasteful number, since it uses less digits than its factorization.

581100055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116220016.

The product of its (nonzero) digits is 1000, while the sum is 25.

The square root of 581100055 is about 24106.0169874660. The cubic root of 581100055 is about 834.4819979117.

The spelling of 581100055 in words is "five hundred eighty-one million, one hundred thousand, fifty-five".