455656561 has 4 divisors (see below), whose sum is σ = 455714532. Its totient is φ = 455598592.

The previous prime is 455656501. The next prime is 455656571. The reversal of 455656561 is 165656554.

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 152374336 + 303282225 = 12344^2 + 17415^2 .

It is a cyclic number.

It is not a de Polignac number, because 455656561 - 2¹¹ = 455654513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (455656501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14920 + ... + 33673.

It is an arithmetic number, because the mean of its divisors is an integer number (113928633).

Almost surely, 2^455656561 is an apocalyptic number.

It is an amenable number.

455656561 is a deficient number, since it is larger than the sum of its proper divisors (57971).

455656561 is an equidigital number, since it uses as much as digits as its factorization.

455656561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57970.

The product of its digits is 540000, while the sum is 43.

The square root of 455656561 is about 21346.1134870027. The cubic root of 455656561 is about 769.5069430184.

The spelling of 455656561 in words is "four hundred fifty-five million, six hundred fifty-six thousand, five hundred sixty-one".