565189481 has 4 divisors (see below), whose sum is σ = 568789572. Its totient is φ = 561589392.

The previous prime is 565189397. The next prime is 565189483. The reversal of 565189481 is 184981565.

It is a happy number.

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 342583081 + 222606400 = 18509^2 + 14920^2 .

It is a cyclic number.

It is not a de Polignac number, because 565189481 - 2¹⁴ = 565173097 is a prime.

It is a super-2 number, since 2×565189481² = 638878298866098722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (565189483) 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 3 ways as a sum of consecutive naturals, for example, 1799810 + ... + 1800123.

It is an arithmetic number, because the mean of its divisors is an integer number (142197393).

Almost surely, 2^565189481 is an apocalyptic number.

It is an amenable number.

565189481 is a deficient number, since it is larger than the sum of its proper divisors (3600091).

565189481 is a wasteful number, since it uses less digits than its factorization.

565189481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3600090.

The product of its digits is 345600, while the sum is 47.

The square root of 565189481 is about 23773.7140766856. The cubic root of 565189481 is about 826.7953462501.

The spelling of 565189481 in words is "five hundred sixty-five million, one hundred eighty-nine thousand, four hundred eighty-one".