265161601 has 2 divisors, whose sum is σ = 265161602. Its totient is φ = 265161600.

The previous prime is 265161593. The next prime is 265161613. The reversal of 265161601 is 106161562.

265161601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 265038400 + 123201 = 16280^2 + 351^2 .

It is a cyclic number.

It is not a de Polignac number, because 265161601 - 2³ = 265161593 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 265161601.

It is not a weakly prime, because it can be changed into another prime (265161691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132580800 + 132580801.

It is an arithmetic number, because the mean of its divisors is an integer number (132580801).

Almost surely, 2^265161601 is an apocalyptic number.

It is an amenable number.

265161601 is a deficient number, since it is larger than the sum of its proper divisors (1).

265161601 is an equidigital number, since it uses as much as digits as its factorization.

265161601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 265161601 is about 16283.7833748794. The cubic root of 265161601 is about 642.4463669544.

The spelling of 265161601 in words is "two hundred sixty-five million, one hundred sixty-one thousand, six hundred one".