52561061320 has 32 divisors (see below), whose sum is σ = 118702049400. Its totient is φ = 20946262528.

The previous prime is 52561061303. The next prime is 52561061321. The reversal of 52561061320 is 2316016525.

It can be written as a sum of positive squares in 4 ways, for example, as 30246079396 + 22314981924 = 173914^2 + 149382^2 .

It is not an unprimeable number, because it can be changed into a prime (52561061321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2431669 + ... + 2453188.

Almost surely, 2^52561061320 is an apocalyptic number.

It is an amenable number.

52561061320 is an abundant number, since it is smaller than the sum of its proper divisors (66140988080).

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

52561061320 is a wasteful number, since it uses less digits than its factorization.

52561061320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4885137 (or 4885133 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 31.

Adding to 52561061320 its reverse (2316016525), we get a palindrome (54877077845).

The spelling of 52561061320 in words is "fifty-two billion, five hundred sixty-one million, sixty-one thousand, three hundred twenty".