455730721 has 8 divisors (see below), whose sum is σ = 470681600. Its totient is φ = 440795520.

The previous prime is 455730719. The next prime is 455730731. The reversal of 455730721 is 127037554.

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 455730721 - 2¹ = 455730719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (455730731) 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, 95920 + ... + 100558.

It is an arithmetic number, because the mean of its divisors is an integer number (58835200).

Almost surely, 2^455730721 is an apocalyptic number.

It is an amenable number.

455730721 is a deficient number, since it is larger than the sum of its proper divisors (14950879).

455730721 is a wasteful number, since it uses less digits than its factorization.

455730721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7839.

The product of its (nonzero) digits is 29400, while the sum is 34.

The square root of 455730721 is about 21347.8505006944. The cubic root of 455730721 is about 769.5486875721.

The spelling of 455730721 in words is "four hundred fifty-five million, seven hundred thirty thousand, seven hundred twenty-one".