455545553 has 4 divisors (see below), whose sum is σ = 459724980. Its totient is φ = 451366128.

The previous prime is 455545537. The next prime is 455545561. The reversal of 455545553 is 355545554.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 314601169 + 140944384 = 17737^2 + 11872^2 .

It is a cyclic number.

It is not a de Polignac number, because 455545553 - 2⁴ = 455545537 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 455545553.

It is not an unprimeable number, because it can be changed into a prime (455845553) 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, 2089550 + ... + 2089767.

It is an arithmetic number, because the mean of its divisors is an integer number (114931245).

Almost surely, 2^455545553 is an apocalyptic number.

It is an amenable number.

455545553 is a deficient number, since it is larger than the sum of its proper divisors (4179427).

455545553 is a wasteful number, since it uses less digits than its factorization.

455545553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4179426.

The product of its digits is 750000, while the sum is 41.

The square root of 455545553 is about 21343.5131363138. The cubic root of 455545553 is about 769.4444483153. Note that the first 5 decimals are identical.

Subtracting from 455545553 its reverse (355545554), we obtain a palindrome (99999999).

The spelling of 455545553 in words is "four hundred fifty-five million, five hundred forty-five thousand, five hundred fifty-three".