265135061 has 2 divisors, whose sum is σ = 265135062. Its totient is φ = 265135060.

The previous prime is 265135019. The next prime is 265135067. The reversal of 265135061 is 160531562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 256320100 + 8814961 = 16010^2 + 2969^2 .

It is a cyclic number.

It is not a de Polignac number, because 265135061 - 2⁶ = 265134997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (265135067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132567530 + 132567531.

It is an arithmetic number, because the mean of its divisors is an integer number (132567531).

Almost surely, 2^265135061 is an apocalyptic number.

It is an amenable number.

265135061 is a deficient number, since it is larger than the sum of its proper divisors (1).

265135061 is an equidigital number, since it uses as much as digits as its factorization.

265135061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 265135061 is about 16282.9684333048. The cubic root of 265135061 is about 642.4249321068.

The spelling of 265135061 in words is "two hundred sixty-five million, one hundred thirty-five thousand, sixty-one".