2521213453 has 16 divisors (see below), whose sum is σ = 2817948672. Its totient is φ = 2235870000.

The previous prime is 2521213439. The next prime is 2521213511. The reversal of 2521213453 is 3543121252.

It is a cyclic number.

It is not a de Polignac number, because 2521213453 - 2¹⁷ = 2521082381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521213423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 427978 + ... + 433828.

It is an arithmetic number, because the mean of its divisors is an integer number (176121792).

Almost surely, 2^2521213453 is an apocalyptic number.

It is an amenable number.

2521213453 is a deficient number, since it is larger than the sum of its proper divisors (296735219).

2521213453 is a wasteful number, since it uses less digits than its factorization.

2521213453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6816.

The product of its digits is 7200, while the sum is 28.

The square root of 2521213453 is about 50211.6864186018. The cubic root of 2521213453 is about 1361.0368126379.

The spelling of 2521213453 in words is "two billion, five hundred twenty-one million, two hundred thirteen thousand, four hundred fifty-three".