2530611621 has 24 divisors (see below), whose sum is σ = 3703976640. Its totient is φ = 1664770176.

The previous prime is 2530611613. The next prime is 2530611631. The reversal of 2530611621 is 1261160352.

2530611621 is a `hidden beast` number, since 2 + 5 + 30 + 6 + 1 + 1 + 621 = 666.

It is not a de Polignac number, because 2530611621 - 2³ = 2530611613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2530611631) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 202861 + ... + 214973.

It is an arithmetic number, because the mean of its divisors is an integer number (154332360).

Almost surely, 2^2530611621 is an apocalyptic number.

It is an amenable number.

2530611621 is a deficient number, since it is larger than the sum of its proper divisors (1173365019).

2530611621 is a wasteful number, since it uses less digits than its factorization.

2530611621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12425 (or 12422 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 2530611621 is about 50305.1848321821. The cubic root of 2530611621 is about 1362.7258659418.

Adding to 2530611621 its reverse (1261160352), we get a palindrome (3791771973).

The spelling of 2530611621 in words is "two billion, five hundred thirty million, six hundred eleven thousand, six hundred twenty-one".