573855861 has 4 divisors (see below), whose sum is σ = 765141152. Its totient is φ = 382570572.

The previous prime is 573855851. The next prime is 573855899. The reversal of 573855861 is 168558375.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 573855861 - 2¹⁴ = 573839477 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 573855861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (573855811) 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, 95642641 + ... + 95642646.

It is an arithmetic number, because the mean of its divisors is an integer number (191285288).

Almost surely, 2^573855861 is an apocalyptic number.

It is an amenable number.

573855861 is a deficient number, since it is larger than the sum of its proper divisors (191285291).

573855861 is a wasteful number, since it uses less digits than its factorization.

573855861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191285290.

The product of its digits is 1008000, while the sum is 48.

The square root of 573855861 is about 23955.2887897433. The cubic root of 573855861 is about 830.9998407092. Note that the first 3 decimals are identical.

The spelling of 573855861 in words is "five hundred seventy-three million, eight hundred fifty-five thousand, eight hundred sixty-one".