538651523 has 2 divisors, whose sum is σ = 538651524. Its totient is φ = 538651522.

The previous prime is 538651507. The next prime is 538651541. The reversal of 538651523 is 325156835.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 538651523 - 2⁴ = 538651507 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (538651543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269325761 + 269325762.

It is an arithmetic number, because the mean of its divisors is an integer number (269325762).

Almost surely, 2^538651523 is an apocalyptic number.

538651523 is a deficient number, since it is larger than the sum of its proper divisors (1).

538651523 is an equidigital number, since it uses as much as digits as its factorization.

538651523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108000, while the sum is 38.

The square root of 538651523 is about 23208.8673355681. The cubic root of 538651523 is about 813.6468811281.

The spelling of 538651523 in words is "five hundred thirty-eight million, six hundred fifty-one thousand, five hundred twenty-three".