5525378557 has 2 divisors, whose sum is σ = 5525378558. Its totient is φ = 5525378556.

The previous prime is 5525378549. The next prime is 5525378567. The reversal of 5525378557 is 7558735255.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4531174596 + 994203961 = 67314^2 + 31531^2 .

It is a cyclic number.

It is not a de Polignac number, because 5525378557 - 2³ = 5525378549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5525378567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2762689278 + 2762689279.

It is an arithmetic number, because the mean of its divisors is an integer number (2762689279).

Almost surely, 2^5525378557 is an apocalyptic number.

It is an amenable number.

5525378557 is a deficient number, since it is larger than the sum of its proper divisors (1).

5525378557 is an equidigital number, since it uses as much as digits as its factorization.

5525378557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7350000, while the sum is 52.

The square root of 5525378557 is about 74332.8901429239. The cubic root of 5525378557 is about 1767.8850068403.

The spelling of 5525378557 in words is "five billion, five hundred twenty-five million, three hundred seventy-eight thousand, five hundred fifty-seven".