542512501 has 2 divisors, whose sum is σ = 542512502. Its totient is φ = 542512500.

The previous prime is 542512471. The next prime is 542512507. The reversal of 542512501 is 105215245.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 534811876 + 7700625 = 23126^2 + 2775^2 .

It is a cyclic number.

It is not a de Polignac number, because 542512501 - 2⁹ = 542511989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (542512507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271256250 + 271256251.

It is an arithmetic number, because the mean of its divisors is an integer number (271256251).

Almost surely, 2^542512501 is an apocalyptic number.

It is an amenable number.

542512501 is a deficient number, since it is larger than the sum of its proper divisors (1).

542512501 is an equidigital number, since it uses as much as digits as its factorization.

542512501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 542512501 is about 23291.8977543694. The cubic root of 542512501 is about 815.5862899691.

Adding to 542512501 its reverse (105215245), we get a palindrome (647727746).

The spelling of 542512501 in words is "five hundred forty-two million, five hundred twelve thousand, five hundred one".