568221457 has 4 divisors (see below), whose sum is σ = 570273076. Its totient is φ = 566169840.

The previous prime is 568221443. The next prime is 568221499. The reversal of 568221457 is 754122865.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 754122865 = 5 ⋅150824573.

It can be written as a sum of positive squares in 2 ways, for example, as 172370641 + 395850816 = 13129^2 + 19896^2 .

It is a cyclic number.

It is not a de Polignac number, because 568221457 - 2¹¹ = 568219409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (568221257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1025394 + ... + 1025947.

It is an arithmetic number, because the mean of its divisors is an integer number (142568269).

Almost surely, 2^568221457 is an apocalyptic number.

It is an amenable number.

568221457 is a deficient number, since it is larger than the sum of its proper divisors (2051619).

568221457 is a wasteful number, since it uses less digits than its factorization.

568221457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2051618.

The product of its digits is 134400, while the sum is 40.

The square root of 568221457 is about 23837.3961875034. The cubic root of 568221457 is about 828.2711665424.

The spelling of 568221457 in words is "five hundred sixty-eight million, two hundred twenty-one thousand, four hundred fifty-seven".