538651543 has 2 divisors, whose sum is σ = 538651544. Its totient is φ = 538651542.

The previous prime is 538651541. The next prime is 538651571. The reversal of 538651543 is 345156835.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 538651543 - 2¹ = 538651541 is a prime.

Together with 538651541, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 538651496 and 538651505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (538651541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269325771 + 269325772.

It is an arithmetic number, because the mean of its divisors is an integer number (269325772).

Almost surely, 2^538651543 is an apocalyptic number.

538651543 is a deficient number, since it is larger than the sum of its proper divisors (1).

538651543 is an equidigital number, since it uses as much as digits as its factorization.

538651543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216000, while the sum is 40.

The square root of 538651543 is about 23208.8677664379. The cubic root of 538651543 is about 813.6468911983.

The spelling of 538651543 in words is "five hundred thirty-eight million, six hundred fifty-one thousand, five hundred forty-three".