8001563057 has 4 divisors (see below), whose sum is σ = 8217821556. Its totient is φ = 7785304560.

The previous prime is 8001563051. The next prime is 8001563083. The reversal of 8001563057 is 7503651008.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4415469601 + 3586093456 = 66449^2 + 59884^2 .

It is a cyclic number.

It is not a de Polignac number, because 8001563057 - 2⁸ = 8001562801 is a prime.

It is a super-2 number, since 2×8001563057² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8001563051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108129194 + ... + 108129267.

It is an arithmetic number, because the mean of its divisors is an integer number (2054455389).

Almost surely, 2^8001563057 is an apocalyptic number.

It is an amenable number.

8001563057 is a deficient number, since it is larger than the sum of its proper divisors (216258499).

8001563057 is a wasteful number, since it uses less digits than its factorization.

8001563057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216258498.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 8001563057 is about 89451.4564274948. The cubic root of 8001563057 is about 2000.1302462678.

The spelling of 8001563057 in words is "eight billion, one million, five hundred sixty-three thousand, fifty-seven".