542532521 has 2 divisors, whose sum is σ = 542532522. Its totient is φ = 542532520.

The previous prime is 542532511. The next prime is 542532527. The reversal of 542532521 is 125235245.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 435306496 + 107226025 = 20864^2 + 10355^2 .

It is a cyclic number.

It is not a de Polignac number, because 542532521 - 2¹⁰ = 542531497 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (542532527) 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, 271266260 + 271266261.

It is an arithmetic number, because the mean of its divisors is an integer number (271266261).

Almost surely, 2^542532521 is an apocalyptic number.

It is an amenable number.

542532521 is a deficient number, since it is larger than the sum of its proper divisors (1).

542532521 is an equidigital number, since it uses as much as digits as its factorization.

542532521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12000, while the sum is 29.

The square root of 542532521 is about 23292.3275135827. The cubic root of 542532521 is about 815.5963222028.

Adding to 542532521 its reverse (125235245), we get a palindrome (667767766).

The spelling of 542532521 in words is "five hundred forty-two million, five hundred thirty-two thousand, five hundred twenty-one".