455664121 has 4 divisors (see below), whose sum is σ = 497088144. Its totient is φ = 414240100.

The previous prime is 455664113. The next prime is 455664127. The reversal of 455664121 is 121466554.

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 not a de Polignac number, because 455664121 - 2³ = 455664113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (455664127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20711995 + ... + 20712016.

It is an arithmetic number, because the mean of its divisors is an integer number (124272036).

Almost surely, 2^455664121 is an apocalyptic number.

It is an amenable number.

455664121 is a deficient number, since it is larger than the sum of its proper divisors (41424023).

455664121 is a wasteful number, since it uses less digits than its factorization.

455664121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41424022.

The product of its digits is 28800, while the sum is 34.

The square root of 455664121 is about 21346.2905676841. The cubic root of 455664121 is about 769.5111987385.

The spelling of 455664121 in words is "four hundred fifty-five million, six hundred sixty-four thousand, one hundred twenty-one".