2557523407 has 2 divisors, whose sum is σ = 2557523408. Its totient is φ = 2557523406.

The previous prime is 2557523383. The next prime is 2557523417. The reversal of 2557523407 is 7043257552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2557523407 - 2⁷ = 2557523279 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2557523407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2557523417) 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, 1278761703 + 1278761704.

It is an arithmetic number, because the mean of its divisors is an integer number (1278761704).

Almost surely, 2^2557523407 is an apocalyptic number.

2557523407 is a deficient number, since it is larger than the sum of its proper divisors (1).

2557523407 is an equidigital number, since it uses as much as digits as its factorization.

2557523407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 294000, while the sum is 40.

The square root of 2557523407 is about 50571.9626571878. The cubic root of 2557523407 is about 1367.5394780872.

The spelling of 2557523407 in words is "two billion, five hundred fifty-seven million, five hundred twenty-three thousand, four hundred seven".