455011561 has 9 divisors (see below), whose sum is σ = 462358711. Its totient is φ = 447780352.

The previous prime is 455011549. The next prime is 455011603. The reversal of 455011561 is 165110554.

It is a happy number.

The square root of 455011561 is 21331.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 447957225 + 7054336 = 21165^2 + 2656^2 .

It is not a de Polignac number, because 455011561 - 2⁷ = 455011433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (455011061) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1770345 + ... + 1770601.

Almost surely, 2^455011561 is an apocalyptic number.

455011561 is the 21331-st square number.

455011561 is the 10666-th centered octagonal number.

It is an amenable number.

455011561 is a deficient number, since it is larger than the sum of its proper divisors (7347150).

455011561 is an frugal number, since it uses more digits than its factorization.

455011561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680 (or 340 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 28.

The cubic root of 455011561 is about 769.1436823249.

The spelling of 455011561 in words is "four hundred fifty-five million, eleven thousand, five hundred sixty-one".