505511010517 has 2 divisors, whose sum is σ = 505511010518. Its totient is φ = 505511010516.

The previous prime is 505511010479. The next prime is 505511010539. The reversal of 505511010517 is 715010115505.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 350494784676 + 155016225841 = 592026^2 + 393721^2 .

It is a cyclic number.

It is not a de Polignac number, because 505511010517 - 2²³ = 505502621909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505511011517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252755505258 + 252755505259.

It is an arithmetic number, because the mean of its divisors is an integer number (252755505259).

Almost surely, 2^505511010517 is an apocalyptic number.

It is an amenable number.

505511010517 is a deficient number, since it is larger than the sum of its proper divisors (1).

505511010517 is an equidigital number, since it uses as much as digits as its factorization.

505511010517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4375, while the sum is 31.

The spelling of 505511010517 in words is "five hundred five billion, five hundred eleven million, ten thousand, five hundred seventeen".