455481821 has 16 divisors (see below), whose sum is σ = 470391360. Its totient is φ = 440899200.

The previous prime is 455481781. The next prime is 455481823. The reversal of 455481821 is 128184554.

It is a cyclic number.

It is not a de Polignac number, because 455481821 - 2¹⁰ = 455480797 is a prime.

It is a super-2 number, since 2×455481821² = 414927378522952082, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (455481823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1201610 + ... + 1201988.

It is an arithmetic number, because the mean of its divisors is an integer number (29399460).

Almost surely, 2^455481821 is an apocalyptic number.

It is an amenable number.

455481821 is a deficient number, since it is larger than the sum of its proper divisors (14909539).

455481821 is a wasteful number, since it uses less digits than its factorization.

455481821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716.

The product of its digits is 51200, while the sum is 38.

The square root of 455481821 is about 21342.0200777715. The cubic root of 455481821 is about 769.4085642196.

The spelling of 455481821 in words is "four hundred fifty-five million, four hundred eighty-one thousand, eight hundred twenty-one".