224555661 has 48 divisors (see below), whose sum is σ = 384583680. Its totient is φ = 124740000.

The previous prime is 224555651. The next prime is 224555663. The reversal of 224555661 is 166555422.

224555661 is a `hidden beast` number, since 2 + 2 + 45 + 556 + 61 = 666.

224555661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 224555661 - 2¹³ = 224547469 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224555663) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 56386 + ... + 60236.

It is an arithmetic number, because the mean of its divisors is an integer number (8012160).

Almost surely, 2^224555661 is an apocalyptic number.

It is an amenable number.

224555661 is a deficient number, since it is larger than the sum of its proper divisors (160028019).

224555661 is a wasteful number, since it uses less digits than its factorization.

224555661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3918 (or 3915 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

The square root of 224555661 is about 14985.1813802837. The cubic root of 224555661 is about 607.8195565132.

The spelling of 224555661 in words is "two hundred twenty-four million, five hundred fifty-five thousand, six hundred sixty-one".