561316524 has 12 divisors (see below), whose sum is σ = 1309738584. Its totient is φ = 187105504.

The previous prime is 561316517. The next prime is 561316531. The reversal of 561316524 is 425613165.

It is an interprime number because it is at equal distance from previous prime (561316517) and next prime (561316531).

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23388177 + ... + 23388200.

It is an arithmetic number, because the mean of its divisors is an integer number (109144882).

Almost surely, 2^561316524 is an apocalyptic number.

It is an amenable number.

561316524 is an abundant number, since it is smaller than the sum of its proper divisors (748422060).

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

561316524 is a wasteful number, since it uses less digits than its factorization.

561316524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46776384 (or 46776382 counting only the distinct ones).

The product of its digits is 21600, while the sum is 33.

The square root of 561316524 is about 23692.1194493021. The cubic root of 561316524 is about 824.9024795656.

Adding to 561316524 its reverse (425613165), we get a palindrome (986929689).

The spelling of 561316524 in words is "five hundred sixty-one million, three hundred sixteen thousand, five hundred twenty-four".