2521353121 has 8 divisors (see below), whose sum is σ = 2884907840. Its totient is φ = 2158638768.

The previous prime is 2521353091. The next prime is 2521353139. The reversal of 2521353121 is 1213531252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2521353121 - 2¹³ = 2521344929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2521353161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203646 + ... + 215671.

It is an arithmetic number, because the mean of its divisors is an integer number (360613480).

Almost surely, 2^2521353121 is an apocalyptic number.

It is an amenable number.

2521353121 is a deficient number, since it is larger than the sum of its proper divisors (363554719).

2521353121 is an equidigital number, since it uses as much as digits as its factorization.

2521353121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420183.

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

The square root of 2521353121 is about 50213.0771911063. The cubic root of 2521353121 is about 1361.0619446868.

Adding to 2521353121 its reverse (1213531252), we get a palindrome (3734884373).

The spelling of 2521353121 in words is "two billion, five hundred twenty-one million, three hundred fifty-three thousand, one hundred twenty-one".