2521133103 has 4 divisors (see below), whose sum is σ = 3361510808. Its totient is φ = 1680755400.

The previous prime is 2521133101. The next prime is 2521133143. The reversal of 2521133103 is 3013311252.

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

It is not a de Polignac number, because 2521133103 - 2¹ = 2521133101 is a prime.

It is a super-2 number, since 2×2521133103² = 12712224246084817218, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2521133103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521133101) 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, 420188848 + ... + 420188853.

It is an arithmetic number, because the mean of its divisors is an integer number (840377702).

Almost surely, 2^2521133103 is an apocalyptic number.

2521133103 is a deficient number, since it is larger than the sum of its proper divisors (840377705).

2521133103 is an equidigital number, since it uses as much as digits as its factorization.

2521133103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840377704.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 2521133103 is about 50210.8862996860. The cubic root of 2521133103 is about 1361.0223539296.

Adding to 2521133103 its reverse (3013311252), we get a palindrome (5534444355).

The spelling of 2521133103 in words is "two billion, five hundred twenty-one million, one hundred thirty-three thousand, one hundred three".