552630721520 has 20 divisors (see below), whose sum is σ = 1284866427720. Its totient is φ = 221052288576.

The previous prime is 552630721481. The next prime is 552630721529. The reversal of 552630721520 is 25127036255.

552630721520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×552630721520² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (552630721529) 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, 3453941930 + ... + 3453942089.

It is an arithmetic number, because the mean of its divisors is an integer number (64243321386).

Almost surely, 2^552630721520 is an apocalyptic number.

It is an amenable number.

552630721520 is an abundant number, since it is smaller than the sum of its proper divisors (732235706200).

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

552630721520 is a wasteful number, since it uses less digits than its factorization.

552630721520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6907884032 (or 6907884026 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 38.

Adding to 552630721520 its reverse (25127036255), we get a palindrome (577757757775).

The spelling of 552630721520 in words is "five hundred fifty-two billion, six hundred thirty million, seven hundred twenty-one thousand, five hundred twenty".