516623143 has 2 divisors, whose sum is σ = 516623144. Its totient is φ = 516623142.

The previous prime is 516623123. The next prime is 516623147. The reversal of 516623143 is 341326615.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 516623143 - 2⁵ = 516623111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (516623147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258311571 + 258311572.

It is an arithmetic number, because the mean of its divisors is an integer number (258311572).

Almost surely, 2^516623143 is an apocalyptic number.

516623143 is a deficient number, since it is larger than the sum of its proper divisors (1).

516623143 is an equidigital number, since it uses as much as digits as its factorization.

516623143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 31.

The square root of 516623143 is about 22729.3454151236. The cubic root of 516623143 is about 802.4006757182.

Adding to 516623143 its reverse (341326615), we get a palindrome (857949758).

The spelling of 516623143 in words is "five hundred sixteen million, six hundred twenty-three thousand, one hundred forty-three".