566517481 has 4 divisors (see below), whose sum is σ = 566590464. Its totient is φ = 566444500.

The previous prime is 566517473. The next prime is 566517493. The reversal of 566517481 is 184715665.

566517481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 184715665 = 5 ⋅36943133.

It is a cyclic number.

It is not a de Polignac number, because 566517481 - 2³ = 566517473 is a prime.

It is a super-2 number, since 2×566517481² = 641884112557170722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (566517881) 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, 23245 + ... + 40906.

It is an arithmetic number, because the mean of its divisors is an integer number (141647616).

Almost surely, 2^566517481 is an apocalyptic number.

It is an amenable number.

566517481 is a deficient number, since it is larger than the sum of its proper divisors (72983).

566517481 is an equidigital number, since it uses as much as digits as its factorization.

566517481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72982.

The product of its digits is 201600, while the sum is 43.

The square root of 566517481 is about 23801.6276964413. The cubic root of 566517481 is about 827.4424008612.

The spelling of 566517481 in words is "five hundred sixty-six million, five hundred seventeen thousand, four hundred eighty-one".