2564751523 has 2 divisors, whose sum is σ = 2564751524. Its totient is φ = 2564751522.

The previous prime is 2564751521. The next prime is 2564751557. The reversal of 2564751523 is 3251574652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2564751523 - 2¹ = 2564751521 is a prime.

Together with 2564751521, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2564751521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1282375761 + 1282375762.

It is an arithmetic number, because the mean of its divisors is an integer number (1282375762).

Almost surely, 2^2564751523 is an apocalyptic number.

2564751523 is a deficient number, since it is larger than the sum of its proper divisors (1).

2564751523 is an equidigital number, since it uses as much as digits as its factorization.

2564751523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 252000, while the sum is 40.

The square root of 2564751523 is about 50643.3759044557. The cubic root of 2564751523 is about 1368.8265873814.

The spelling of 2564751523 in words is "two billion, five hundred sixty-four million, seven hundred fifty-one thousand, five hundred twenty-three".