2521213003 has 4 divisors (see below), whose sum is σ = 2522117200. Its totient is φ = 2520308808.

The previous prime is 2521213001. The next prime is 2521213027. The reversal of 2521213003 is 3003121252.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2521213003 - 2¹ = 2521213001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2521213001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 447903 + ... + 453496.

It is an arithmetic number, because the mean of its divisors is an integer number (630529300).

Almost surely, 2^2521213003 is an apocalyptic number.

2521213003 is a deficient number, since it is larger than the sum of its proper divisors (904197).

2521213003 is an equidigital number, since it uses as much as digits as its factorization.

2521213003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 904196.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 2521213003 is about 50211.6819375731. The cubic root of 2521213003 is about 1361.0367316628.

Adding to 2521213003 its reverse (3003121252), we get a palindrome (5524334255).

The spelling of 2521213003 in words is "two billion, five hundred twenty-one million, two hundred thirteen thousand, three".