265472021 has 2 divisors, whose sum is σ = 265472022. Its totient is φ = 265472020.

The previous prime is 265471993. The next prime is 265472041. The reversal of 265472021 is 120274562.

It is a happy number.

265472021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 173580625 + 91891396 = 13175^2 + 9586^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-265472021 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (265472041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132736010 + 132736011.

It is an arithmetic number, because the mean of its divisors is an integer number (132736011).

Almost surely, 2^265472021 is an apocalyptic number.

It is an amenable number.

265472021 is a deficient number, since it is larger than the sum of its proper divisors (1).

265472021 is an equidigital number, since it uses as much as digits as its factorization.

265472021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 265472021 is about 16293.3121556054. The cubic root of 265472021 is about 642.6969693904.

The spelling of 265472021 in words is "two hundred sixty-five million, four hundred seventy-two thousand, twenty-one".