52280513 has 2 divisors, whose sum is σ = 52280514. Its totient is φ = 52280512.

The previous prime is 52280509. The next prime is 52280537. The reversal of 52280513 is 31508225.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50452609 + 1827904 = 7103^2 + 1352^2 .

It is a cyclic number.

It is not a de Polignac number, because 52280513 - 2² = 52280509 is a prime.

It is not a weakly prime, because it can be changed into another prime (52280563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26140256 + 26140257.

It is an arithmetic number, because the mean of its divisors is an integer number (26140257).

Almost surely, 2^52280513 is an apocalyptic number.

It is an amenable number.

52280513 is a deficient number, since it is larger than the sum of its proper divisors (1).

52280513 is an equidigital number, since it uses as much as digits as its factorization.

52280513 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 52280513 is about 7230.5264676924. The cubic root of 52280513 is about 373.9210777447.

Adding to 52280513 its reverse (31508225), we get a palindrome (83788738).

The spelling of 52280513 in words is "fifty-two million, two hundred eighty thousand, five hundred thirteen".