2521230030 has 128 divisors (see below), whose sum is σ = 7382568960. Its totient is φ = 607201920.

The previous prime is 2521230011. The next prime is 2521230037. The reversal of 2521230030 is 300321252.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2521229985 and 2521230012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521230037) 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 63 ways as a sum of consecutive naturals, for example, 463587 + ... + 468993.

It is an arithmetic number, because the mean of its divisors is an integer number (57676320).

Almost surely, 2^2521230030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2521230030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3691284480).

2521230030 is an abundant number, since it is smaller than the sum of its proper divisors (4861338930).

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

2521230030 is a wasteful number, since it uses less digits than its factorization.

2521230030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5591 (or 5585 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 2521230030 is about 50211.8514894641. The cubic root of 2521230030 is about 1361.0397955743.

Adding to 2521230030 its reverse (300321252), we get a palindrome (2821551282).

The spelling of 2521230030 in words is "two billion, five hundred twenty-one million, two hundred thirty thousand, thirty".