565021572 has 12 divisors (see below), whose sum is σ = 1318383696. Its totient is φ = 188340520.

The previous prime is 565021511. The next prime is 565021579. The reversal of 565021572 is 275120565.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (565021579) 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, 23542554 + ... + 23542577.

It is an arithmetic number, because the mean of its divisors is an integer number (109865308).

Almost surely, 2^565021572 is an apocalyptic number.

It is an amenable number.

565021572 is an abundant number, since it is smaller than the sum of its proper divisors (753362124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

565021572 is a wasteful number, since it uses less digits than its factorization.

565021572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47085138 (or 47085136 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 33.

The square root of 565021572 is about 23770.1824141086. The cubic root of 565021572 is about 826.7134621301.

The spelling of 565021572 in words is "five hundred sixty-five million, twenty-one thousand, five hundred seventy-two".