548261513 has 2 divisors, whose sum is σ = 548261514. Its totient is φ = 548261512.

The previous prime is 548261491. The next prime is 548261537. The reversal of 548261513 is 315162845.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 527758729 + 20502784 = 22973^2 + 4528^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-548261513 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (548261573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274130756 + 274130757.

It is an arithmetic number, because the mean of its divisors is an integer number (274130757).

Almost surely, 2^548261513 is an apocalyptic number.

It is an amenable number.

548261513 is a deficient number, since it is larger than the sum of its proper divisors (1).

548261513 is an equidigital number, since it uses as much as digits as its factorization.

548261513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28800, while the sum is 35.

The square root of 548261513 is about 23414.9847960660. The cubic root of 548261513 is about 818.4570992155.

The spelling of 548261513 in words is "five hundred forty-eight million, two hundred sixty-one thousand, five hundred thirteen".