516742417 has 2 divisors, whose sum is σ = 516742418. Its totient is φ = 516742416.

The previous prime is 516742409. The next prime is 516742423. The reversal of 516742417 is 714247615.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 262148481 + 254593936 = 16191^2 + 15956^2 .

It is a cyclic number.

It is not a de Polignac number, because 516742417 - 2³ = 516742409 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (516742117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258371208 + 258371209.

It is an arithmetic number, because the mean of its divisors is an integer number (258371209).

Almost surely, 2^516742417 is an apocalyptic number.

It is an amenable number.

516742417 is a deficient number, since it is larger than the sum of its proper divisors (1).

516742417 is an equidigital number, since it uses as much as digits as its factorization.

516742417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47040, while the sum is 37.

The square root of 516742417 is about 22731.9690524160. The cubic root of 516742417 is about 802.4624216770.

The spelling of 516742417 in words is "five hundred sixteen million, seven hundred forty-two thousand, four hundred seventeen".