571225891 has 8 divisors (see below), whose sum is σ = 616240224. Its totient is φ = 527479680.

The previous prime is 571225877. The next prime is 571225901. The reversal of 571225891 is 198522175.

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 571225891 - 2¹⁹ = 570701603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (571225691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 316095 + ... + 317896.

It is an arithmetic number, because the mean of its divisors is an integer number (77030028).

Almost surely, 2^571225891 is an apocalyptic number.

571225891 is a deficient number, since it is larger than the sum of its proper divisors (45014333).

571225891 is a wasteful number, since it uses less digits than its factorization.

571225891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634061.

The product of its digits is 50400, while the sum is 40.

The square root of 571225891 is about 23900.3324453866. The cubic root of 571225891 is about 829.7284111658.

The spelling of 571225891 in words is "five hundred seventy-one million, two hundred twenty-five thousand, eight hundred ninety-one".