2517905779 has 2 divisors, whose sum is σ = 2517905780. Its totient is φ = 2517905778.

The previous prime is 2517905701. The next prime is 2517905809. The reversal of 2517905779 is 9775097152.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2517905779 - 2²⁷ = 2383688051 is a prime.

It is not a weakly prime, because it can be changed into another prime (2517905179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1258952889 + 1258952890.

It is an arithmetic number, because the mean of its divisors is an integer number (1258952890).

Almost surely, 2^2517905779 is an apocalyptic number.

2517905779 is a deficient number, since it is larger than the sum of its proper divisors (1).

2517905779 is an equidigital number, since it uses as much as digits as its factorization.

2517905779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1389150, while the sum is 52.

The square root of 2517905779 is about 50178.7383161434. The cubic root of 2517905779 is about 1360.4413538347.

The spelling of 2517905779 in words is "two billion, five hundred seventeen million, nine hundred five thousand, seven hundred seventy-nine".