455509561 has 16 divisors (see below), whose sum is σ = 503346816. Its totient is φ = 409643136.

The previous prime is 455509547. The next prime is 455509589. The reversal of 455509561 is 165905554.

It is a cyclic number.

It is not a de Polignac number, because 455509561 - 2¹³ = 455501369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (455509511) 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, 75876 + ... + 81658.

It is an arithmetic number, because the mean of its divisors is an integer number (31459176).

Almost surely, 2^455509561 is an apocalyptic number.

It is an amenable number.

455509561 is a deficient number, since it is larger than the sum of its proper divisors (47837255).

455509561 is a wasteful number, since it uses less digits than its factorization.

455509561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5952.

The product of its (nonzero) digits is 135000, while the sum is 40.

The square root of 455509561 is about 21342.6699594966. The cubic root of 455509561 is about 769.4241835479.

The spelling of 455509561 in words is "four hundred fifty-five million, five hundred nine thousand, five hundred sixty-one".