265421441 has 4 divisors (see below), whose sum is σ = 266430912. Its totient is φ = 264411972.

The previous prime is 265421399. The next prime is 265421447. The reversal of 265421441 is 144124562.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-265421441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (265421447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 504341 + ... + 504866.

It is an arithmetic number, because the mean of its divisors is an integer number (66607728).

Almost surely, 2^265421441 is an apocalyptic number.

It is an amenable number.

265421441 is a deficient number, since it is larger than the sum of its proper divisors (1009471).

265421441 is a wasteful number, since it uses less digits than its factorization.

265421441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009470.

The product of its digits is 7680, while the sum is 29.

The square root of 265421441 is about 16291.7599110716. The cubic root of 265421441 is about 642.6561494233.

The spelling of 265421441 in words is "two hundred sixty-five million, four hundred twenty-one thousand, four hundred forty-one".