265050161 has 2 divisors, whose sum is σ = 265050162. Its totient is φ = 265050160.

The previous prime is 265050139. The next prime is 265050187. The reversal of 265050161 is 161050562.

265050161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (265050187) can be obtained adding 265050161 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 258598561 + 6451600 = 16081^2 + 2540^2 .

It is a cyclic number.

It is not a de Polignac number, because 265050161 - 2¹⁰ = 265049137 is a prime.

It is a super-2 number, since 2×265050161² = 140503175692251842, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 265050161.

It is not a weakly prime, because it can be changed into another prime (265050661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132525080 + 132525081.

It is an arithmetic number, because the mean of its divisors is an integer number (132525081).

Almost surely, 2^265050161 is an apocalyptic number.

It is an amenable number.

265050161 is a deficient number, since it is larger than the sum of its proper divisors (1).

265050161 is an equidigital number, since it uses as much as digits as its factorization.

265050161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 265050161 is about 16280.3612060667. The cubic root of 265050161 is about 642.3563536004.

It can be divided in two parts, 2650501 and 61, that added together give a palindrome (2650562).

The spelling of 265050161 in words is "two hundred sixty-five million, fifty thousand, one hundred sixty-one".