565521612 has 12 divisors (see below), whose sum is σ = 1319550456. Its totient is φ = 188507200.

The previous prime is 565521611. The next prime is 565521613. The reversal of 565521612 is 216125565.

It is an interprime number because it is at equal distance from previous prime (565521611) and next prime (565521613).

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 (565521611) 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, 23563389 + ... + 23563412.

It is an arithmetic number, because the mean of its divisors is an integer number (109962538).

Almost surely, 2^565521612 is an apocalyptic number.

It is an amenable number.

565521612 is an abundant number, since it is smaller than the sum of its proper divisors (754028844).

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

565521612 is a wasteful number, since it uses less digits than its factorization.

565521612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47126808 (or 47126806 counting only the distinct ones).

The product of its digits is 18000, while the sum is 33.

The square root of 565521612 is about 23780.6983076612. The cubic root of 565521612 is about 826.9572686979.

The spelling of 565521612 in words is "five hundred sixty-five million, five hundred twenty-one thousand, six hundred twelve".