572621 has 8 divisors (see below), whose sum is σ = 659520. Its totient is φ = 487008.

The previous prime is 572609. The next prime is 572629. The reversal of 572621 is 126275.

Added to its reverse (126275) it gives a square (698896 = 836²).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-572621 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (572629) 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 in 7 ways as a sum of consecutive naturals, for example, 1025 + ... + 1481.

It is an arithmetic number, because the mean of its divisors is an integer number (82440).

2⁵⁷²⁶²¹ is an apocalyptic number.

It is an amenable number.

572621 is a deficient number, since it is larger than the sum of its proper divisors (86899).

572621 is a wasteful number, since it uses less digits than its factorization.

572621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643.

The product of its digits is 840, while the sum is 23.

The square root of 572621 is about 756.7172523473. The cubic root of 572621 is about 83.0403345837.

Adding to 572621 its reverse (126275), we get a palindrome (698896).

The spelling of 572621 in words is "five hundred seventy-two thousand, six hundred twenty-one".