571056989 has 8 divisors (see below), whose sum is σ = 602046240. Its totient is φ = 540161136.

The previous prime is 571056973. The next prime is 571057007. The reversal of 571056989 is 989650175.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 571056989 - 2⁴ = 571056973 is a prime.

It is a super-2 number, since 2×571056989² = 652212169371492242, 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 (571056089) 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 7 ways as a sum of consecutive naturals, for example, 10607 + ... + 35420.

It is an arithmetic number, because the mean of its divisors is an integer number (75255780).

Almost surely, 2^571056989 is an apocalyptic number.

It is an amenable number.

571056989 is a deficient number, since it is larger than the sum of its proper divisors (30989251).

571056989 is a wasteful number, since it uses less digits than its factorization.

571056989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46699.

The product of its (nonzero) digits is 680400, while the sum is 50.

The square root of 571056989 is about 23896.7987186569. The cubic root of 571056989 is about 829.6466241383.

The spelling of 571056989 in words is "five hundred seventy-one million, fifty-six thousand, nine hundred eighty-nine".