537216517 has 2 divisors, whose sum is σ = 537216518. Its totient is φ = 537216516.

The previous prime is 537216509. The next prime is 537216521. The reversal of 537216517 is 715612735.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 500237956 + 36978561 = 22366^2 + 6081^2 .

It is a cyclic number.

It is not a de Polignac number, because 537216517 - 2³ = 537216509 is a prime.

It is a super-2 number, since 2×537216517² = 577203172275222578, which contains 22 as substring.

It is equal to p_28209916 and since 537216517 and 28209916 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 (537216557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 268608258 + 268608259.

It is an arithmetic number, because the mean of its divisors is an integer number (268608259).

Almost surely, 2^537216517 is an apocalyptic number.

It is an amenable number.

537216517 is a deficient number, since it is larger than the sum of its proper divisors (1).

537216517 is an equidigital number, since it uses as much as digits as its factorization.

537216517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 44100, while the sum is 37.

The square root of 537216517 is about 23177.9316808036. The cubic root of 537216517 is about 812.9237008098.

The spelling of 537216517 in words is "five hundred thirty-seven million, two hundred sixteen thousand, five hundred seventeen".