2521282697 has 4 divisors (see below), whose sum is σ = 2522149956. Its totient is φ = 2520415440.

The previous prime is 2521282693. The next prime is 2521282717. The reversal of 2521282697 is 7962821252.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1685841481 + 835441216 = 41059^2 + 28904^2 .

It is a cyclic number.

It is not a de Polignac number, because 2521282697 - 2² = 2521282693 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2521282693) 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, 429254 + ... + 435087.

It is an arithmetic number, because the mean of its divisors is an integer number (630537489).

Almost surely, 2^2521282697 is an apocalyptic number.

It is an amenable number.

2521282697 is a deficient number, since it is larger than the sum of its proper divisors (867259).

2521282697 is an equidigital number, since it uses as much as digits as its factorization.

2521282697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867258.

The product of its digits is 241920, while the sum is 44.

The square root of 2521282697 is about 50212.3759346239. The cubic root of 2521282697 is about 1361.0492726130.

The spelling of 2521282697 in words is "two billion, five hundred twenty-one million, two hundred eighty-two thousand, six hundred ninety-seven".