581051 has 4 divisors (see below), whose sum is σ = 583704. Its totient is φ = 578400.

The previous prime is 581047. The next prime is 581069. The reversal of 581051 is 150185.

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

It is not a de Polignac number, because 581051 - 2² = 581047 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (581041) by changing a digit.

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, 965 + ... + 1446.

It is an arithmetic number, because the mean of its divisors is an integer number (145926).

2⁵⁸¹⁰⁵¹ is an apocalyptic number.

581051 is a deficient number, since it is larger than the sum of its proper divisors (2653).

581051 is a wasteful number, since it uses less digits than its factorization.

581051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2652.

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 581051 is about 762.2670135851. The cubic root of 581051 is about 83.4458515630.

The spelling of 581051 in words is "five hundred eighty-one thousand, fifty-one".