265503061 has 2 divisors, whose sum is σ = 265503062. Its totient is φ = 265503060.

The previous prime is 265503019. The next prime is 265503079. The reversal of 265503061 is 160305562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 155127025 + 110376036 = 12455^2 + 10506^2 .

It is a cyclic number.

It is not a de Polignac number, because 265503061 - 2⁷ = 265502933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (265500061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132751530 + 132751531.

It is an arithmetic number, because the mean of its divisors is an integer number (132751531).

Almost surely, 2^265503061 is an apocalyptic number.

It is an amenable number.

265503061 is a deficient number, since it is larger than the sum of its proper divisors (1).

265503061 is an equidigital number, since it uses as much as digits as its factorization.

265503061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 265503061 is about 16294.2646658264. The cubic root of 265503061 is about 642.7220172735.

The spelling of 265503061 in words is "two hundred sixty-five million, five hundred three thousand, sixty-one".