565949520 has 120 divisors (see below), whose sum is σ = 1927590912. Its totient is φ = 148780800.

The previous prime is 565949479. The next prime is 565949551. The reversal of 565949520 is 25949565.

It is a happy number.

565949520 is a `hidden beast` number, since 5 + 6 + 594 + 9 + 52 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45585 + ... + 56655.

Almost surely, 2^565949520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 565949520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (963795456).

565949520 is an abundant number, since it is smaller than the sum of its proper divisors (1361641392).

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

565949520 is a wasteful number, since it uses less digits than its factorization.

565949520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11161 (or 11152 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 45.

The square root of 565949520 is about 23789.6935667528. The cubic root of 565949520 is about 827.1657914787.

Adding to 565949520 its sum of digits (45), we get a palindrome (565949565).

The spelling of 565949520 in words is "five hundred sixty-five million, nine hundred forty-nine thousand, five hundred twenty".