265721041 has 8 divisors (see below), whose sum is σ = 272659968. Its totient is φ = 258804000.

The previous prime is 265721017. The next prime is 265721051. The reversal of 265721041 is 140127562.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 265721041 - 2⁵ = 265721009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (265721051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20736 + ... + 31006.

It is an arithmetic number, because the mean of its divisors is an integer number (34082496).

Almost surely, 2^265721041 is an apocalyptic number.

It is an amenable number.

265721041 is a deficient number, since it is larger than the sum of its proper divisors (6938927).

265721041 is a wasteful number, since it uses less digits than its factorization.

265721041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10943.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 265721041 is about 16300.9521501046. The cubic root of 265721041 is about 642.8978623543.

The spelling of 265721041 in words is "two hundred sixty-five million, seven hundred twenty-one thousand, forty-one".