572920981 has 4 divisors (see below), whose sum is σ = 573404832. Its totient is φ = 572437132.

The previous prime is 572920969. The next prime is 572920993. The reversal of 572920981 is 189029275.

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 an interprime number because it is at equal distance from previous prime (572920969) and next prime (572920993).

It is a cyclic number.

It is not a de Polignac number, because 572920981 - 2⁷ = 572920853 is a prime.

It is a super-2 number, since 2×572920981² = 656476900940004722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (572920181) 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 3 ways as a sum of consecutive naturals, for example, 240145 + ... + 242518.

It is an arithmetic number, because the mean of its divisors is an integer number (143351208).

Almost surely, 2^572920981 is an apocalyptic number.

It is an amenable number.

572920981 is a deficient number, since it is larger than the sum of its proper divisors (483851).

572920981 is a wasteful number, since it uses less digits than its factorization.

572920981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483850.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 572920981 is about 23935.7678172228. The cubic root of 572920981 is about 830.5483293072.

The spelling of 572920981 in words is "five hundred seventy-two million, nine hundred twenty thousand, nine hundred eighty-one".