455561 has 8 divisors (see below), whose sum is σ = 492480. Its totient is φ = 420112.

The previous prime is 455557. The next prime is 455573. The reversal of 455561 is 165554.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 455561 - 2² = 455557 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 455561.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 455561.

It is not an unprimeable number, because it can be changed into a prime (455531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 326 + ... + 1008.

It is an arithmetic number, because the mean of its divisors is an integer number (61560).

2⁴⁵⁵⁵⁶¹ is an apocalyptic number.

It is an amenable number.

455561 is a deficient number, since it is larger than the sum of its proper divisors (36919).

455561 is a wasteful number, since it uses less digits than its factorization.

455561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735.

The product of its digits is 3000, while the sum is 26.

The square root of 455561 is about 674.9525909277. The cubic root of 455561 is about 76.9453145195.

Subtracting from 455561 its sum of digits (26), we obtain a triangular number (455535 = T₉₅₄).

It can be divided in two parts, 455 and 561, that multiplied together give a triangular number (255255 = T₇₁₄).

The spelling of 455561 in words is "four hundred fifty-five thousand, five hundred sixty-one".