2517881057 has 2 divisors, whose sum is σ = 2517881058. Its totient is φ = 2517881056.

The previous prime is 2517881027. The next prime is 2517881071. The reversal of 2517881057 is 7501887152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1517803681 + 1000077376 = 38959^2 + 31624^2 .

It is a cyclic number.

It is not a de Polignac number, because 2517881057 - 2⁸ = 2517880801 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2517880999 and 2517881017.

It is not a weakly prime, because it can be changed into another prime (2517881027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1258940528 + 1258940529.

It is an arithmetic number, because the mean of its divisors is an integer number (1258940529).

Almost surely, 2^2517881057 is an apocalyptic number.

It is an amenable number.

2517881057 is a deficient number, since it is larger than the sum of its proper divisors (1).

2517881057 is an equidigital number, since it uses as much as digits as its factorization.

2517881057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 156800, while the sum is 44.

The square root of 2517881057 is about 50178.4919761445. The cubic root of 2517881057 is about 1360.4369013327.

The spelling of 2517881057 in words is "two billion, five hundred seventeen million, eight hundred eighty-one thousand, fifty-seven".