565233421 has 16 divisors (see below), whose sum is σ = 593526528. Its totient is φ = 537721600.

The previous prime is 565233419. The next prime is 565233433. The reversal of 565233421 is 124332565.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 565233421 - 2¹ = 565233419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (565233121) 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 15 ways as a sum of consecutive naturals, for example, 1003686 + ... + 1004248.

It is an arithmetic number, because the mean of its divisors is an integer number (37095408).

Almost surely, 2^565233421 is an apocalyptic number.

It is an amenable number.

565233421 is a deficient number, since it is larger than the sum of its proper divisors (28293107).

565233421 is a wasteful number, since it uses less digits than its factorization.

565233421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1172.

The product of its digits is 21600, while the sum is 31.

The square root of 565233421 is about 23774.6381886244. The cubic root of 565233421 is about 826.8167717763.

Adding to 565233421 its reverse (124332565), we get a palindrome (689565986).

The spelling of 565233421 in words is "five hundred sixty-five million, two hundred thirty-three thousand, four hundred twenty-one".