265516513 has 2 divisors, whose sum is σ = 265516514. Its totient is φ = 265516512.

The previous prime is 265516483. The next prime is 265516553. The reversal of 265516513 is 315615562.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 241584849 + 23931664 = 15543^2 + 4892^2 .

It is a cyclic number.

It is not a de Polignac number, because 265516513 - 2²¹ = 263419361 is a prime.

It is not a weakly prime, because it can be changed into another prime (265516553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132758256 + 132758257.

It is an arithmetic number, because the mean of its divisors is an integer number (132758257).

Almost surely, 2^265516513 is an apocalyptic number.

It is an amenable number.

265516513 is a deficient number, since it is larger than the sum of its proper divisors (1).

265516513 is an equidigital number, since it uses as much as digits as its factorization.

265516513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27000, while the sum is 34.

The square root of 265516513 is about 16294.6774438772. The cubic root of 265516513 is about 642.7328718258.

The spelling of 265516513 in words is "two hundred sixty-five million, five hundred sixteen thousand, five hundred thirteen".