572991 has 4 divisors (see below), whose sum is σ = 763992. Its totient is φ = 381992.

The previous prime is 572969. The next prime is 572993. The reversal of 572991 is 199275.

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

It is a cyclic number.

It is not a de Polignac number, because 572991 - 2⁶ = 572927 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (572993) 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, 95496 + ... + 95501.

It is an arithmetic number, because the mean of its divisors is an integer number (190998).

2⁵⁷²⁹⁹¹ is an apocalyptic number.

572991 is a deficient number, since it is larger than the sum of its proper divisors (191001).

572991 is a wasteful number, since it uses less digits than its factorization.

572991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191000.

The product of its digits is 5670, while the sum is 33.

The square root of 572991 is about 756.9616899157. The cubic root of 572991 is about 83.0582162824.

The spelling of 572991 in words is "five hundred seventy-two thousand, nine hundred ninety-one".