2530615021 has 4 divisors (see below), whose sum is σ = 2760670944. Its totient is φ = 2300559100.

The previous prime is 2530614899. The next prime is 2530615049. The reversal of 2530615021 is 1205160352.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2530615021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2530615621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115027945 + ... + 115027966.

It is an arithmetic number, because the mean of its divisors is an integer number (690167736).

Almost surely, 2^2530615021 is an apocalyptic number.

It is an amenable number.

2530615021 is a deficient number, since it is larger than the sum of its proper divisors (230055923).

2530615021 is a wasteful number, since it uses less digits than its factorization.

2530615021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230055922.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 2530615021 is about 50305.2186259040. The cubic root of 2530615021 is about 1362.7264762377.

Adding to 2530615021 its reverse (1205160352), we get a palindrome (3735775373).

The spelling of 2530615021 in words is "two billion, five hundred thirty million, six hundred fifteen thousand, twenty-one".