2530421305521 has 8 divisors (see below), whose sum is σ = 3378708051264. Its totient is φ = 1684541048400.

The previous prime is 2530421305483. The next prime is 2530421305553. The reversal of 2530421305521 is 1255031240352.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2530421305521 - 2¹⁸ = 2530421043377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2530421305571) 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, 601619701 + ... + 601623906.

It is an arithmetic number, because the mean of its divisors is an integer number (422338506408).

Almost surely, 2^{2530421305521} is an apocalyptic number.

It is an amenable number.

2530421305521 is a deficient number, since it is larger than the sum of its proper divisors (848286745743).

2530421305521 is a wasteful number, since it uses less digits than its factorization.

2530421305521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203244311.

The product of its (nonzero) digits is 36000, while the sum is 33.

Adding to 2530421305521 its reverse (1255031240352), we get a palindrome (3785452545873).

The spelling of 2530421305521 in words is "two trillion, five hundred thirty billion, four hundred twenty-one million, three hundred five thousand, five hundred twenty-one".