561652520 has 128 divisors (see below), whose sum is σ = 1496880000. Its totient is φ = 186977280.

The previous prime is 561652517. The next prime is 561652537. The reversal of 561652520 is 25256165.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 851951 + ... + 852609.

It is an arithmetic number, because the mean of its divisors is an integer number (11694375).

Almost surely, 2^561652520 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 561652520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (748440000).

561652520 is an abundant number, since it is smaller than the sum of its proper divisors (935227480).

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

561652520 is a wasteful number, since it uses less digits than its factorization.

561652520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843 (or 839 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 561652520 is about 23699.2092695094. The cubic root of 561652520 is about 825.0670383235.

It can be divided in two parts, 56165 and 2520, that added together give a palindrome (58685).

The spelling of 561652520 in words is "five hundred sixty-one million, six hundred fifty-two thousand, five hundred twenty".