516520541 has 2 divisors, whose sum is σ = 516520542. Its totient is φ = 516520540.

The previous prime is 516520531. The next prime is 516520547. The reversal of 516520541 is 145025615.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 434889316 + 81631225 = 20854^2 + 9035^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-516520541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (516520547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258260270 + 258260271.

It is an arithmetic number, because the mean of its divisors is an integer number (258260271).

Almost surely, 2^516520541 is an apocalyptic number.

It is an amenable number.

516520541 is a deficient number, since it is larger than the sum of its proper divisors (1).

516520541 is an equidigital number, since it uses as much as digits as its factorization.

516520541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 516520541 is about 22727.0882648878. The cubic root of 516520541 is about 802.3475529433.

The spelling of 516520541 in words is "five hundred sixteen million, five hundred twenty thousand, five hundred forty-one".