2523846821 has 2 divisors, whose sum is σ = 2523846822. Its totient is φ = 2523846820.

The previous prime is 2523846811. The next prime is 2523846823. The reversal of 2523846821 is 1286483252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2392285921 + 131560900 = 48911^2 + 11470^2 .

It is a cyclic number.

It is not a de Polignac number, because 2523846821 - 2²² = 2519652517 is a prime.

Together with 2523846823, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2523846823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1261923410 + 1261923411.

It is an arithmetic number, because the mean of its divisors is an integer number (1261923411).

Almost surely, 2^2523846821 is an apocalyptic number.

It is an amenable number.

2523846821 is a deficient number, since it is larger than the sum of its proper divisors (1).

2523846821 is an equidigital number, since it uses as much as digits as its factorization.

2523846821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 184320, while the sum is 41.

The square root of 2523846821 is about 50237.9022352646. The cubic root of 2523846821 is about 1361.5105083047.

The spelling of 2523846821 in words is "two billion, five hundred twenty-three million, eight hundred forty-six thousand, eight hundred twenty-one".