538540001 has 2 divisors, whose sum is σ = 538540002. Its totient is φ = 538540000.

The previous prime is 538539997. The next prime is 538540003. The reversal of 538540001 is 100045835.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 481144225 + 57395776 = 21935^2 + 7576^2 .

It is a cyclic number.

It is not a de Polignac number, because 538540001 - 2² = 538539997 is a prime.

Together with 538540003, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (538540003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269270000 + 269270001.

It is an arithmetic number, because the mean of its divisors is an integer number (269270001).

Almost surely, 2^538540001 is an apocalyptic number.

It is an amenable number.

538540001 is a deficient number, since it is larger than the sum of its proper divisors (1).

538540001 is an equidigital number, since it uses as much as digits as its factorization.

538540001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 538540001 is about 23206.4646381132. The cubic root of 538540001 is about 813.5907249761.

Adding to 538540001 its reverse (100045835), we get a palindrome (638585836).

The spelling of 538540001 in words is "five hundred thirty-eight million, five hundred forty thousand, one".