517471901 has 2 divisors, whose sum is σ = 517471902. Its totient is φ = 517471900.

The previous prime is 517471873. The next prime is 517471909. The reversal of 517471901 is 109174715.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 478471876 + 39000025 = 21874^2 + 6245^2 .

It is a cyclic number.

It is not a de Polignac number, because 517471901 - 2⁶ = 517471837 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is equal to p_27226565 and since 517471901 and 27226565 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (517471909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258735950 + 258735951.

It is an arithmetic number, because the mean of its divisors is an integer number (258735951).

Almost surely, 2^517471901 is an apocalyptic number.

It is an amenable number.

517471901 is a deficient number, since it is larger than the sum of its proper divisors (1).

517471901 is an equidigital number, since it uses as much as digits as its factorization.

517471901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8820, while the sum is 35.

The square root of 517471901 is about 22748.0087260402. The cubic root of 517471901 is about 802.8398555346.

The spelling of 517471901 in words is "five hundred seventeen million, four hundred seventy-one thousand, nine hundred one".