52740521 has 2 divisors, whose sum is σ = 52740522. Its totient is φ = 52740520.

The previous prime is 52740497. The next prime is 52740551. The reversal of 52740521 is 12504725.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37027225 + 15713296 = 6085^2 + 3964^2 .

It is a cyclic number.

It is not a de Polignac number, because 52740521 - 2¹⁴ = 52724137 is a prime.

It is not a weakly prime, because it can be changed into another prime (52740551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26370260 + 26370261.

It is an arithmetic number, because the mean of its divisors is an integer number (26370261).

Almost surely, 2^52740521 is an apocalyptic number.

It is an amenable number.

52740521 is a deficient number, since it is larger than the sum of its proper divisors (1).

52740521 is an equidigital number, since it uses as much as digits as its factorization.

52740521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 52740521 is about 7262.2669325769. The cubic root of 52740521 is about 375.0145677304.

The spelling of 52740521 in words is "fifty-two million, seven hundred forty thousand, five hundred twenty-one".