2530361485521 has 9 divisors (see below), whose sum is σ = 3654973483291. Its totient is φ = 1686904475592.

The previous prime is 2530361485507. The next prime is 2530361485543. The reversal of 2530361485521 is 1255841630352.

It is a happy number.

The square root of 2530361485521 is 1590711.

It is a perfect power (a square), and thus also a powerful number.

2530361485521 is a `hidden beast` number, since 2 + 5 + 3 + 0 + 3 + 614 + 8 + 5 + 5 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2031693890625 + 498667594896 = 1425375^2 + 706164^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is a de Polignac number, because none of the positive numbers 2^k-2530361485521 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2530361485571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4507015 + ... + 5037251.

Almost surely, 2^{2530361485521} is an apocalyptic number.

2530361485521 is the 1590711-st square number.

2530361485521 is the 795356-th centered octagonal number.

It is an amenable number.

2530361485521 is a deficient number, since it is larger than the sum of its proper divisors (1124611997770).

2530361485521 is an frugal number, since it uses more digits than its factorization.

2530361485521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060480 (or 530240 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 45.

The spelling of 2530361485521 in words is "two trillion, five hundred thirty billion, three hundred sixty-one million, four hundred eighty-five thousand, five hundred twenty-one".